diff --git a/include/internal/catch_compiler_capabilities.h b/include/internal/catch_compiler_capabilities.h
index bb409825..abd75891 100644
--- a/include/internal/catch_compiler_capabilities.h
+++ b/include/internal/catch_compiler_capabilities.h
@@ -61,7 +61,7 @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // We know some environments not to support full POSIX signals
-#if defined(__CYGWIN__) || defined(__QNX__)
+#if defined(__CYGWIN__) || defined(__QNX__) || defined(__EMSCRIPTEN__)
 
 #   if !defined(CATCH_CONFIG_POSIX_SIGNALS)
 #       define CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS