diff --git a/src/_tkagg.cpp b/src/_tkagg.cpp
index a2c99b50486b..d31700c3ee65 100644
--- a/src/_tkagg.cpp
+++ b/src/_tkagg.cpp
@@ -24,6 +24,10 @@
  * also.
  */
 #define WIN32_DLL
+static inline PyObject *PyErr_SetFromWindowsErr(int ierr) {
+    PyErr_SetString(PyExc_OSError, "Call to EnumProcessModules failed");
+    return NULL;
+}
 #endif
 
 #ifdef WIN32_DLL