diff --git a/src/screen.cpp b/src/screen.cpp
index 88a97a2dd..40bc5cbee 100644
--- a/src/screen.cpp
+++ b/src/screen.cpp
@@ -214,7 +214,7 @@ size_t escape_code_length(const wchar_t *code) {
         for (size_t p = 0; p < sizeof esc / sizeof *esc && !found; p++) {
             if (!esc[p]) continue;
 
-            for (size_t k = 0; k < std::min(16, static_cast<int>(max_colors)); k++) {
+            for (size_t k = 0; k < std::min(16UL, static_cast<size_t>(max_colors)); k++) {
                 size_t len = try_sequence(tparm(esc[p], k), code);
                 if (len) {
                     resulting_length = len;