diff --git a/simplex~.c b/simplex~.c
index a682868..752edb9 100644
--- a/simplex~.c
+++ b/simplex~.c
@@ -727,7 +727,15 @@ static void *simplex_tilde_new(t_symbol *s, int ac, t_atom *av) {
 
 void simplex_tilde_setup(void) {
 #ifdef _WIN32
-    g_signal_setmultiout = (t_signal_setmultiout)GetProcAddress(GetModuleHandle(NULL), "signal_setmultiout");
+    // get a handle to the module containing the Pd API functions.
+    // NB: GetModuleHandle("pd.dll") does not cover all cases.
+    HMODULE module;
+    if (GetModuleHandleEx(
+            GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+            (LPCSTR)&pd_typedmess, &module)) {
+        g_signal_setmultiout = (t_signal_setmultiout)(void *)GetProcAddress(
+            module, "signal_setmultiout");
+    }
 #else
     g_signal_setmultiout = (t_signal_setmultiout)dlsym(dlopen(NULL, RTLD_NOW), "signal_setmultiout");
 #endif