diff --git a/ggml/src/iqk/iqk_quantize.cpp b/ggml/src/iqk/iqk_quantize.cpp
index e8d5f3c4..5e657f4a 100644
--- a/ggml/src/iqk/iqk_quantize.cpp
+++ b/ggml/src/iqk/iqk_quantize.cpp
@@ -25,6 +25,7 @@
 #include <thread>
 #include <atomic>
 #include <unordered_map>
+#include <string>
 
 #if defined(_MSC_VER)
 #pragma warning(disable: 4244 4267) // possible loss of data