diff --git a/common.h b/common.h
index 8166a71..38112a7 100644
--- a/common.h
+++ b/common.h
@@ -30,9 +30,9 @@
 
 #define PERMISSION (0600)
 
-#define SEM_FREE_SPACE "/sem_free_space_01527193"
-#define SEM_USED_SPACE "/sem_used_space_01527193"
-#define SEM_WRITE_END "/sem_write_end_01527193"
+#define SEM_FREE_SPACE "/free_space_01527193"
+#define SEM_USED_SPACE "/used_space_01527193"
+#define SEM_WRITE_END "/write_end_01527193"
 
 #define MAX_ITEMS 16
 #define CIRC_BUF_SIZE 17