diff --git a/include/spdlog/common.h b/include/spdlog/common.h
index e1108a0a..b4faf26e 100644
--- a/include/spdlog/common.h
+++ b/include/spdlog/common.h
@@ -14,6 +14,7 @@
 #include <string>
 #include <type_traits>
 #include <functional>
+#include <cassert>

 #ifdef _WIN32
 #ifndef NOMINMAX