diff --git a/dlls/vcomp/main.c b/dlls/vcomp/main.c
index 170bd4323c6..a369af1af3b 100644
--- a/dlls/vcomp/main.c
+++ b/dlls/vcomp/main.c
@@ -47,6 +47,11 @@ double CDECL omp_get_wtime(void)
     return GetTickCount() / 1000.0;
 }
 
+void CDECL omp_set_num_threads(int num_threads)
+{
+    TRACE("(%d): stub\n", num_threads);
+}
+
 void CDECL _vcomp_set_num_threads(int num_threads)
 {
     TRACE("(%d): stub\n", num_threads);
diff --git a/dlls/vcomp/vcomp.spec b/dlls/vcomp/vcomp.spec
index e53a475e6a7..cca56f1234d 100644
--- a/dlls/vcomp/vcomp.spec
+++ b/dlls/vcomp/vcomp.spec
@@ -105,7 +105,7 @@
 @ stub omp_set_lock
 @ stub omp_set_nest_lock
 @ stub omp_set_nested
-@ stub omp_set_num_threads
+@ cdecl omp_set_num_threads(long)
 @ stub omp_test_lock
 @ stub omp_test_nest_lock
 @ stub omp_unset_lock