diff --git a/ext/fts5/fts5_main.c b/ext/fts5/fts5_main.c
index 0588516e10..3dea6cafcb 100644
--- a/ext/fts5/fts5_main.c
+++ b/ext/fts5/fts5_main.c
@@ -1949,14 +1949,15 @@ static int fts5CacheInstArray(Fts5Cursor *pCsr){
 
         nInst++;
         if( nInst>=pCsr->nInstAlloc ){
-          pCsr->nInstAlloc = pCsr->nInstAlloc ? pCsr->nInstAlloc*2 : 32;
+          int nNewSize = pCsr->nInstAlloc ? pCsr->nInstAlloc*2 : 32;
           aInst = (int*)sqlite3_realloc64(
-              pCsr->aInst, pCsr->nInstAlloc*sizeof(int)*3
+              pCsr->aInst, nNewSize*sizeof(int)*3
               );
           if( aInst ){
             pCsr->aInst = aInst;
+            pCsr->nInstAlloc = nNewSize;
           }else{
-            pCsr->nInstAlloc = nInst = 0;
+            nInst--;
             rc = SQLITE_NOMEM;
             break;
           }
diff --git a/manifest b/manifest
index 999276d329..9cf98316d4 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C If\san\sFTS5\sCursor\sfails\sto\senlarge\sthe\sspace\sfor\sthe\saInst\sarray,\sset\sthe\nsize\sof\sthe\saInst\sarray\sto\szero.\ndbsqlfuzz\s294254b8105cca409f27a711f1eb2e9e63cbcac5.
-D 2021-05-22T01:30:30.860
+C The\sfix\sin\sthe\sprevious\scheck-in\swas\sonly\scorrect\sif\sthe\sOOM\soccurs\son\nthe\sinitial\sallocation.\s\sThis\schanges\sshould\smake\sit\scorrect\sfor\sa\sresize\nas\swell.
+D 2021-05-22T11:00:03.746
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -120,7 +120,7 @@ F ext/fts5/fts5_config.c 8336d0ff6db0933f63cfec8ae0ab76e68393259cbccc0b46e1f79f7
 F ext/fts5/fts5_expr.c 9462249a3bb82d0e49b163500f9d2197c2e4cd95bf440a9bbfc3906b22ea1e1b
 F ext/fts5/fts5_hash.c 1aa93c9b5f461afba66701ee226297dc78402b3bdde81e90a10de5fe3df14959
 F ext/fts5/fts5_index.c 222b5e56f51139ca5400985e26ea9971165901c7a45a2c17499bd2be3695c697
-F ext/fts5/fts5_main.c ff58907c51e347808ea4691f2cb341bb3d5558448a0c17a25a26a0740ea47a09
+F ext/fts5/fts5_main.c 35ebbcae681a4a40027c47bc2e94d7e7c81e331dc406bb9b23c546454ee8f98a
 F ext/fts5/fts5_storage.c 58ba71e6cd3d43a5735815e7956ee167babb4d2cbfe206905174792af4d09d75
 F ext/fts5/fts5_tcl.c b1445cbe69908c411df8084a10b2485500ac70a9c747cdc8cda175a3da59d8ae
 F ext/fts5/fts5_test_mi.c 08c11ec968148d4cb4119d96d819f8c1f329812c568bac3684f5464be177d3ee
@@ -1914,7 +1914,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 94225d693932eb0b5d7799d40513afbd31ed40e1e156675eb92ad7216f1ff20f
-R 7ab0547b25495b9c2ea308d91c7abcea
+P 4ae5e5b5ecbce580d3f7f970076e828fc6fb5fbcdc3bbe8381ab38f52870a54f
+R 1cc525965a2e2a127c8f9151feacb5ac
 U drh
-Z 2300f3100b43ff3fe1a9ea7184b73bea
+Z e1fae3c7a54ed2950c8f337c19125b3f
diff --git a/manifest.uuid b/manifest.uuid
index 9a13403063..e8044de1cd 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-4ae5e5b5ecbce580d3f7f970076e828fc6fb5fbcdc3bbe8381ab38f52870a54f
\ No newline at end of file
+57087ab2f297e4d96da5b9f3b89a26d8dd2bc4d22c2be8045b5d956d86282f39
\ No newline at end of file