1 files changed, 2 insertions, 1 deletions
diff --git a/emcc b/emcc
index 9dde800e..5dcd7b8c 100755
--- a/emcc
+++ b/emcc
@@ -123,8 +123,9 @@ Options that are modified or new in %s include:
   --typed-arrays <mode>    0: No typed arrays
                            1: Parallel typed arrays
                            2: Shared (C-like) typed arrays (default)
-  --llvm-opts <level>      0: No LLVM optimizations (default)
+  --llvm-opts <level>      0: No LLVM optimizations (default in -O0)
                            1: Safe/portable LLVM optimizations
+                              (default in -O1 and above)
                            2: Full, unsafe/unportable LLVM optimizations;
                               this will almost certainly break the
                               generated code!