diff --git a/libcmark-gfm-extensions/libcmark-gfm-extensions/extensions/cmark-gfm-core-extensions.h b/libcmark-gfm-extensions/libcmark-gfm-extensions/extensions/cmark-gfm-core-extensions.h
index 0645915..69f1f31 100644
--- a/libcmark-gfm-extensions/libcmark-gfm-extensions/extensions/cmark-gfm-core-extensions.h
+++ b/libcmark-gfm-extensions/libcmark-gfm-extensions/extensions/cmark-gfm-core-extensions.h
@@ -7,9 +7,16 @@ extern "C" {
 
 #include "cmark-gfm-extension_api.h"
 #include "cmark-gfm-extensions_export.h"
-#include "config.h" // for bool
 #include <stdint.h>
 
+/* Fix the issue #244, including stdbool.h instead of (private) config.h.
+ *
+ * Note that here we assume that stdbool.h is available regardless if the C99
+ * standard is specified for the C compiler or not, which is true for all the
+ * platforms/compilers that we currently support.
+ */
+#include <stdbool.h>
+
 CMARK_GFM_EXTENSIONS_EXPORT
 void cmark_gfm_core_extensions_ensure_registered(void);