diff --git a/dlls/kernel32/process.c b/dlls/kernel32/process.c
index 199b2f3e449..2c8074b9096 100644
--- a/dlls/kernel32/process.c
+++ b/dlls/kernel32/process.c
@@ -3568,8 +3568,8 @@ BOOL WINAPI QueryFullProcessImageNameW(HANDLE hProcess, DWORD dwFlags, LPWSTR lp
         ntlen = devlen + (result->Length/sizeof(WCHAR) - 2);
         if (ntlen + 1 > *pdwSize)
         {
-            SetLastError(ERROR_INSUFFICIENT_BUFFER);
-            return FALSE;
+            status = STATUS_BUFFER_TOO_SMALL;
+            goto cleanup;
         }
         *pdwSize = ntlen;