diff --git a/src/Makefile b/src/Makefile
index edbc51b..7680a4e 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -30,7 +30,7 @@ libshmcache.a: $(SHMCACHE_STATIC_OBJS)
 .c:
 	$(COMPILE) -o $@ $<  $(SHMCACHE_STATIC_OBJS) $(LIB_PATH) $(INC_PATH)
 .c.o:
-	$(COMPILE) -c -o $@ $<  $(INC_PATH)
+	$(COMPILE) -c -fPIC -o $@ $<  $(INC_PATH)
 .c.lo:
 	$(COMPILE) -c -fPIC -o $@ $<  $(INC_PATH)
 install:
diff --git a/src/shm_list.h b/src/shm_list.h
index 2596f13..c6d0c49 100644
--- a/src/shm_list.h
+++ b/src/shm_list.h
@@ -1,5 +1,9 @@
 //shm_list.h
 
+#ifndef __STDC_FORMAT_MACROS
+#define __STDC_FORMAT_MACROS
+#endif
+
 #ifndef _SHM_LIST_H
 #define _SHM_LIST_H