diff --git a/lib/cookie.c b/lib/cookie.c
index b0206f6237027f382e30bdb8aa3f14965df15c83..c9883594cb562ee074f8bca5ff6f56a19a84d61e 100644
--- a/lib/cookie.c
+++ b/lib/cookie.c
@@ -92,7 +92,7 @@ Example set of cookies:
 #include "strtok.h"
 
 /* The last #include file should be: */
-#ifdef MALLOCDEBUG
+#ifdef CURLDEBUG
 #include "memdebug.h"
 #endif
 
diff --git a/lib/escape.c b/lib/escape.c
index 354b284e2347f84371f012d867ad591860aa309e..21acfae2d27ed845ec6b832225e7d22570c0717a 100644
--- a/lib/escape.c
+++ b/lib/escape.c
@@ -33,7 +33,7 @@
 #include <string.h>
 
 /* The last #include file should be: */
-#ifdef MALLOCDEBUG
+#ifdef CURLDEBUG
 #include "memdebug.h"
 #endif