diff --git a/lib/actions/message-actions.js b/lib/actions/message-actions.js
--- a/lib/actions/message-actions.js
+++ b/lib/actions/message-actions.js
@@ -485,7 +485,7 @@
         return await thinThreadCallback({
           query: input.query,
           threadID: input.threadID,
-          cursor: input.messageIDcursor,
+          cursor: input.messageIDCursor,
         });
       }
 
@@ -495,7 +495,7 @@
         input.query,
         input.threadID,
         timestampCursor,
-        input.messageIDcursor,
+        input.messageIDCursor,
       );
 
       const messages = clientDBMessageInfos.map(
diff --git a/lib/shared/search-utils.js b/lib/shared/search-utils.js
--- a/lib/shared/search-utils.js
+++ b/lib/shared/search-utils.js
@@ -342,7 +342,7 @@
       onResultsReceived,
       queryID,
       timestampCursor,
-      messageIDcursor,
+      messageIDCursor,
     ) => {
       const searchMessagesPromise = (async () => {
         if (query === '') {
@@ -353,7 +353,7 @@
           query,
           threadID,
           timestampCursor,
-          messageIDcursor,
+          messageIDCursor,
         });
         onResultsReceived(messages, endReached, queryID, threadID);
       })();
diff --git a/lib/types/message-types.js b/lib/types/message-types.js
--- a/lib/types/message-types.js
+++ b/lib/types/message-types.js
@@ -695,7 +695,7 @@
   +query: string,
   +threadID: string,
   +timestampCursor?: ?number,
-  +messageIDcursor?: ?string,
+  +messageIDCursor?: ?string,
 };
 
 export type SearchMessagesKeyserverRequest = {