diff --git a/hashtable.c b/hashtable.c
index f225ce3..d8bf25d 100644
--- a/hashtable.c
+++ b/hashtable.c
@@ -4,7 +4,7 @@
 #include "sdbm.h"
 #include "hashtable.h"
 
-bool streq(char* str1, size_t len1, char* str2, size_t len2) {
+static bool streq(char* str1, size_t len1, char* str2, size_t len2) {
 	if        (len1 == 0 && len2 == 0) {
 		return !strcmp(str1, str2);
 	} else if (len1 == len2) {