1 files changed, 1 insertions, 1 deletions
diff --git a/emcc b/emcc
index 7edc71e4..e25d9d91 100755
--- a/emcc
+++ b/emcc
@@ -1002,7 +1002,7 @@ try:
 
   # Apply effects from settings
   if shared.Settings.ASM_JS:
-    assert opt_level == 2, 'asm.js requires -O2'
+    assert opt_level >= 1, 'asm.js requires -O1 or above'
 
     if closure:
       print >> sys.stderr, 'emcc: warning: disabling closure because it is not compatible with asm.js code generation'