diff --git a/libcutils/str_parms.c b/libcutils/str_parms.c
index 7cfbcb3..1edef11 100644
--- a/libcutils/str_parms.c
+++ b/libcutils/str_parms.c
@@ -240,6 +240,10 @@
     return ret;
 }
 
+int str_parms_has_key(struct str_parms *str_parms, const char *key) {
+    return hashmapGet(str_parms->map, (void *)key) != NULL;
+}
+
 int str_parms_get_str(struct str_parms *str_parms, const char *key, char *val,
                       int len)
 {