diff --git a/src/engine/engine_util_errmem.c b/src/engine/engine_util_errmem.c
index 58be05a1..04e98009 100644
--- a/src/engine/engine_util_errmem.c
+++ b/src/engine/engine_util_errmem.c
@@ -97,7 +97,7 @@ void mju_writeLog(const char* type, const char* msg) {
     // get time
     time(&rawtime);
 
-#if defined(_POSIX_C_SOURCE) || defined(__APPLE__) || defined(__STDC_VERSION_TIME_H__)
+#if defined(_POSIX_C_SOURCE) || defined(__APPLE__) || defined(__STDC_VERSION_TIME_H__) || defined(__EMSCRIPTEN__)
     localtime_r(&rawtime, &timeinfo);
 #elif _MSC_VER
     localtime_s(&timeinfo, &rawtime);