diff --git a/subprojects/gst-plugins-bad/sys/decklink/gstdecklink.h b/subprojects/gst-plugins-bad/sys/decklink/gstdecklink.h
index 13f76cbf41..5481c7d5ea 100644
--- a/subprojects/gst-plugins-bad/sys/decklink/gstdecklink.h
+++ b/subprojects/gst-plugins-bad/sys/decklink/gstdecklink.h
@@ -63,7 +63,8 @@
 #define COMSTR_T const char*
 #define CONVERT_COM_STRING(s)
 #define CONVERT_TO_COM_STRING(s)
-#define FREE_COM_STRING(s)
+/* While this is a const char*, the string still has to be freed */
+#define FREE_COM_STRING(s) free(s);
 #define WINAPI
 #endif /* G_OS_WIN32 */