diff --git a/reactos/dll/win32/netapi32/local_group.c b/reactos/dll/win32/netapi32/local_group.c
index 4189611777d..1b00ea2da6e 100644
--- a/reactos/dll/win32/netapi32/local_group.c
+++ b/reactos/dll/win32/netapi32/local_group.c
@@ -1163,7 +1163,7 @@ NetLocalGroupEnum(
 //    }
 
 done:
-    if (ApiStatus == NERR_Success && EnumContext->Phase != DonePhase)
+    if (ApiStatus == NERR_Success && EnumContext != NULL && EnumContext->Phase != DonePhase)
         ApiStatus = ERROR_MORE_DATA;
 
     if (EnumContext != NULL)
diff --git a/reactos/dll/win32/netapi32/user.c b/reactos/dll/win32/netapi32/user.c
index 02fee928963..60577727681 100644
--- a/reactos/dll/win32/netapi32/user.c
+++ b/reactos/dll/win32/netapi32/user.c
@@ -2554,7 +2554,7 @@ NetUserEnum(LPCWSTR servername,
 //    }
 
 done:
-    if (ApiStatus == NERR_Success && EnumContext->Index < EnumContext->Count)
+    if (ApiStatus == NERR_Success && EnumContext != NULL && EnumContext->Index < EnumContext->Count)
         ApiStatus = ERROR_MORE_DATA;
 
     if (EnumContext != NULL)