diff --git a/devmode b/devmode
index f9850f5..bdb3b63 100755
--- a/devmode
+++ b/devmode
@@ -1,4 +1,5 @@
 # Script which sets up the CMake build for Debug mode.
 # After running, chdir to the build subdir ane run "make"
 mkdir build
-cd build && cmake .. -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_FLAGS="-fsanitize=address" $@
+cd build && cmake .. -DCMAKE_BUILD_TYPE=Debug \
+  -DCMAKE_CXX_FLAGS="-O1 -fsanitize=address -fno-omit-frame-pointer" $@