diff --git a/mem/shm_mem.c b/mem/shm_mem.c
index 2c58c44e417..8395cfdeeab 100644
--- a/mem/shm_mem.c
+++ b/mem/shm_mem.c
@@ -25,6 +25,8 @@
 
 #ifdef SHM_MEM
 
+#if 0
+
 #include <stdlib.h>
 
 #include "shm_mem.h"
@@ -266,3 +268,5 @@ unsigned long shm_available_safe()
 }
 
 #endif
+
+#endif
diff --git a/mem/shm_mem.h b/mem/shm_mem.h
index d31ce6b9e7c..35d6503019b 100644
--- a/mem/shm_mem.h
+++ b/mem/shm_mem.h
@@ -31,6 +31,10 @@
 #ifndef shm_mem_h
 #define shm_mem_h
 
+#include "shm.h"
+
+#if 0
+
 #include <string.h>
 #include <errno.h>
 #include <sys/types.h>
@@ -337,6 +341,7 @@ do{\
  */
 unsigned long shm_available_safe();
 
+#endif
 
 #endif /* shm_mem_h */