diff --git a/Source/generic_map.h b/Source/generic_map.h
index ff1d92a..7261ca7 100644
--- a/Source/generic_map.h
+++ b/Source/generic_map.h
@@ -55,7 +55,7 @@ uint32_t fibHash(uint32_t hash, uint32_t shift);
                 uint32_t cell; \
                 old[i].hash = cell = fibHash(hashFn(old[i].key), map->shift); \
                 while(new[cell].active) { \
-                    if(++cell > map->capacity) \
+                    if(++cell >= map->capacity) \
                         cell = 0; \
                 } \
                 new[cell] = old[i]; \
@@ -168,4 +168,4 @@ uint32_t fibHash(uint32_t hash, uint32_t shift);
         return true; \
     }
 
-#endif //GENERIC_MAP_GENERIC_MAP_H
\ No newline at end of file
+#endif //GENERIC_MAP_GENERIC_MAP_H