diff --git a/cmake/QtExecutableHelpers.cmake b/cmake/QtExecutableHelpers.cmake
index 61f4c005d12..44eae75bd2d 100644
--- a/cmake/QtExecutableHelpers.cmake
+++ b/cmake/QtExecutableHelpers.cmake
@@ -136,7 +136,12 @@ function(qt_internal_add_executable name)
         MACOSX_BUNDLE "${arg_GUI}"
     )
 
-    qt_internal_set_exceptions_flags("${name}" ${arg_EXCEPTIONS})
+    if(WASM)
+        # WASM unconditionally sets DISABLE_EXCEPTION_CATCHING=1
+        qt_internal_set_exceptions_flags("${name}" NO_EXCEPTIONS)
+    else()
+        qt_internal_set_exceptions_flags("${name}" ${arg_EXCEPTIONS})
+    endif()
 
     if(WASM)
         qt_internal_wasm_add_finalizers("${name}")