diff --git a/src/Magnum/Platform/EmscriptenApplication.cpp b/src/Magnum/Platform/EmscriptenApplication.cpp
index 053acb89c..fc50a6afe 100644
--- a/src/Magnum/Platform/EmscriptenApplication.cpp
+++ b/src/Magnum/Platform/EmscriptenApplication.cpp
@@ -517,7 +517,7 @@ void EmscriptenApplication::setupCallbacks(bool resizable) {
         if(element === document) return 1;
         if(element === window) return 2;
         if('id' in element)
-            return allocate(intArrayFromString('#' + element.id), 'i8', ALLOC_NORMAL);
+            return allocate(intArrayFromString(element.id), 'i8', ALLOC_NORMAL);
 
         return 0;
     }));
@@ -528,7 +528,7 @@ void EmscriptenApplication::setupCallbacks(bool resizable) {
         if(element === document) element = {id: '#document'};
         if(element === window) element = {id: '#window'};
         if('id' in element)
-            return allocate(intArrayFromString('#' + element.id), 'i8', ALLOC_NORMAL);
+            return allocate(intArrayFromString(element.id), 'i8', ALLOC_NORMAL);
 
         return 0;
     }));