diff --git a/configure.ac b/configure.ac
index d555558..7a6c365 100644
--- a/configure.ac
+++ b/configure.ac
@@ -84,7 +84,7 @@ AC_SUBST([HAS_CPPCHECK])
 AC_FC_LIBRARY_LDFLAGS
 
 AC_CHECK_LIB([m], [sqrt])
-AC_CHECK_HEADERS([assert.h errno.h malloc.h math.h pthread.h stdbool.h stdint.h stdio.h stdlib.h string.h])
+AC_CHECK_HEADERS([assert.h errno.h math.h pthread.h stdbool.h stdint.h stdio.h stdlib.h string.h])
 
 ## pthread
 AC_CHECK_LIB([pthread], [pthread_create])
diff --git a/org/qmckl_memory.org b/org/qmckl_memory.org
index 8212d6b..f2887c6 100644
--- a/org/qmckl_memory.org
+++ b/org/qmckl_memory.org
@@ -46,7 +46,7 @@ int main() {
 #define QMCKL_MEMORY_HPT
 
 #include <stdint.h>
-#include <malloc.h>
+#include <stdlib.h>
   #+end_src
 
 * Memory data structure for the context