diff --git a/reactos/dll/win32/advapi32/service/sctrl.c b/reactos/dll/win32/advapi32/service/sctrl.c
index bf5e7d2d58e..8310a83cd3a 100644
--- a/reactos/dll/win32/advapi32/service/sctrl.c
+++ b/reactos/dll/win32/advapi32/service/sctrl.c
@@ -177,7 +177,12 @@ ScServiceMainStub(LPVOID Context)
                                 0,
                                 (dwArgCount + 1) * sizeof(LPSTR));
         if (lpArgVector == NULL)
+        {
+            HeapFree(GetProcessHeap(),
+                        0,
+                        AnsiString);
             return ERROR_OUTOFMEMORY;
+        }
 
         dwArgCount = 0;
         Ptr = AnsiString;