diff --git a/lib/shared/messages/add-members-message-spec.js b/lib/shared/messages/add-members-message-spec.js
--- a/lib/shared/messages/add-members-message-spec.js
+++ b/lib/shared/messages/add-members-message-spec.js
@@ -57,7 +57,7 @@
     const content = clientDBMessageInfo.content;
     invariant(
       content !== undefined && content !== null,
-      'content must be defined',
+      'content must be defined for AddMembers',
     );
     const rawAddMembersMessageInfo: RawAddMembersMessageInfo = {
       type: messageTypes.ADD_MEMBERS,
diff --git a/lib/shared/messages/change-role-message-spec.js b/lib/shared/messages/change-role-message-spec.js
--- a/lib/shared/messages/change-role-message-spec.js
+++ b/lib/shared/messages/change-role-message-spec.js
@@ -67,7 +67,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for ChangeRole',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
     const rawChangeRoleMessageInfo: RawChangeRoleMessageInfo = {
diff --git a/lib/shared/messages/change-settings-message-spec.js b/lib/shared/messages/change-settings-message-spec.js
--- a/lib/shared/messages/change-settings-message-spec.js
+++ b/lib/shared/messages/change-settings-message-spec.js
@@ -60,7 +60,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for ChangeSettings',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
     const field = Object.keys(content)[0];
diff --git a/lib/shared/messages/create-entry-message-spec.js b/lib/shared/messages/create-entry-message-spec.js
--- a/lib/shared/messages/create-entry-message-spec.js
+++ b/lib/shared/messages/create-entry-message-spec.js
@@ -60,7 +60,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for CreateEntry',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
     const rawCreateEntryMessageInfo: RawCreateEntryMessageInfo = {
diff --git a/lib/shared/messages/create-sidebar-message-spec.js b/lib/shared/messages/create-sidebar-message-spec.js
--- a/lib/shared/messages/create-sidebar-message-spec.js
+++ b/lib/shared/messages/create-sidebar-message-spec.js
@@ -71,7 +71,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for CreateSidebar',
     );
 
     const { sourceMessageAuthorID, ...initialThreadState } = JSON.parse(
diff --git a/lib/shared/messages/create-sub-thread-message-spec.js b/lib/shared/messages/create-sub-thread-message-spec.js
--- a/lib/shared/messages/create-sub-thread-message-spec.js
+++ b/lib/shared/messages/create-sub-thread-message-spec.js
@@ -63,7 +63,7 @@
     const content = clientDBMessageInfo.content;
     invariant(
       content !== undefined && content !== null,
-      'content must be defined',
+      'content must be defined for CreateSubThread',
     );
     const rawCreateSubthreadMessageInfo: RawCreateSubthreadMessageInfo = {
       type: messageTypes.CREATE_SUB_THREAD,
diff --git a/lib/shared/messages/create-thread-message-spec.js b/lib/shared/messages/create-thread-message-spec.js
--- a/lib/shared/messages/create-thread-message-spec.js
+++ b/lib/shared/messages/create-thread-message-spec.js
@@ -61,7 +61,7 @@
     const content = clientDBMessageInfo.content;
     invariant(
       content !== undefined && content !== null,
-      'content must be defined',
+      'content must be defined for CreateThread',
     );
     const rawCreateThreadMessageInfo: RawCreateThreadMessageInfo = {
       type: messageTypes.CREATE_THREAD,
diff --git a/lib/shared/messages/delete-entry-message-spec.js b/lib/shared/messages/delete-entry-message-spec.js
--- a/lib/shared/messages/delete-entry-message-spec.js
+++ b/lib/shared/messages/delete-entry-message-spec.js
@@ -59,7 +59,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for DeleteEntry',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
     const rawDeleteEntryMessageInfo: RawDeleteEntryMessageInfo = {
diff --git a/lib/shared/messages/edit-entry-message-spec.js b/lib/shared/messages/edit-entry-message-spec.js
--- a/lib/shared/messages/edit-entry-message-spec.js
+++ b/lib/shared/messages/edit-entry-message-spec.js
@@ -60,7 +60,7 @@
     invariant(
       clientDBMessageInfo.content !== null &&
         clientDBMessageInfo.content !== undefined,
-      'content must be defined',
+      'content must be defined for EditEntry',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
     const rawEditEntryMessageInfo: RawEditEntryMessageInfo = {
diff --git a/lib/shared/messages/reaction-message-spec.js b/lib/shared/messages/reaction-message-spec.js
--- a/lib/shared/messages/reaction-message-spec.js
+++ b/lib/shared/messages/reaction-message-spec.js
@@ -91,7 +91,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for Reaction',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
 
diff --git a/lib/shared/messages/remove-members-message-spec.js b/lib/shared/messages/remove-members-message-spec.js
--- a/lib/shared/messages/remove-members-message-spec.js
+++ b/lib/shared/messages/remove-members-message-spec.js
@@ -57,7 +57,7 @@
     const content = clientDBMessageInfo.content;
     invariant(
       content !== undefined && content !== null,
-      'content must be defined',
+      'content must be defined for RemoveMembers',
     );
     const rawRemoveMembersMessageInfo: RawRemoveMembersMessageInfo = {
       type: messageTypes.REMOVE_MEMBERS,
diff --git a/lib/shared/messages/restore-entry-message-spec.js b/lib/shared/messages/restore-entry-message-spec.js
--- a/lib/shared/messages/restore-entry-message-spec.js
+++ b/lib/shared/messages/restore-entry-message-spec.js
@@ -59,7 +59,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for RestoreEntry',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
     const rawRestoreEntryMessageInfo: RawRestoreEntryMessageInfo = {
diff --git a/lib/shared/messages/sidebar-source-message-spec.js b/lib/shared/messages/sidebar-source-message-spec.js
--- a/lib/shared/messages/sidebar-source-message-spec.js
+++ b/lib/shared/messages/sidebar-source-message-spec.js
@@ -51,7 +51,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for SidebarSource',
     );
     const sourceMessage = JSON.parse(clientDBMessageInfo.content);
     const rawSidebarSourceMessageInfo: RawSidebarSourceMessageInfo = {
diff --git a/lib/shared/messages/unsupported-message-spec.js b/lib/shared/messages/unsupported-message-spec.js
--- a/lib/shared/messages/unsupported-message-spec.js
+++ b/lib/shared/messages/unsupported-message-spec.js
@@ -33,7 +33,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for Unsupported',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
     const rawUnsupportedMessageInfo: RawUnsupportedMessageInfo = {
diff --git a/lib/shared/messages/update-relationship-message-spec.js b/lib/shared/messages/update-relationship-message-spec.js
--- a/lib/shared/messages/update-relationship-message-spec.js
+++ b/lib/shared/messages/update-relationship-message-spec.js
@@ -63,7 +63,7 @@
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
-      'content must be defined',
+      'content must be defined for UpdateRelationship',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
     const rawUpdateRelationshipMessageInfo: RawUpdateRelationshipMessageInfo = {