diff --git a/src/util/FFvaluestore.c b/src/util/FFvaluestore.c
index 6b0407500..68040045b 100644
--- a/src/util/FFvaluestore.c
+++ b/src/util/FFvaluestore.c
@@ -2,7 +2,7 @@
 
 #include <string.h>
 
-typedef char KeyType[33]; //32 byte key + \0
+typedef char KeyType[32]; //31 byte key + \0
 
 void ffValuestoreInit(FFvaluestore* vs, uint32_t valueSize)
 {
diff --git a/src/util/FFvaluestore.h b/src/util/FFvaluestore.h
index c59b584a6..4d966837c 100644
--- a/src/util/FFvaluestore.h
+++ b/src/util/FFvaluestore.h
@@ -10,7 +10,7 @@ typedef FFlist FFvaluestore;
 
 void ffValuestoreInit(FFvaluestore* vs, uint32_t valueSize);
 FF_C_NODISCARD void* ffValuestoreGet(FFvaluestore* vs, const char* key);
-void* ffValuestoreSet(FFvaluestore* vs, const char* key, bool* created); //created may be NULL
+FF_C_NODISCARD void* ffValuestoreSet(FFvaluestore* vs, const char* key, bool* created); //created may be NULL
 void ffValuestoreDestroy(FFvaluestore* vs);
 
 #endif