Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -55,9 +55,6 @@ else(VERSION_BUILD)
 endif(VERSION_BUILD)
 set(PACKAGE "${KOBO_PACKAGE_NAME}-${VERSION_STRING}")
 
-# Release build: full optimization, no debug features, no debug info
-set(CMAKE_C_FLAGS_RELEASE "-O3 -DNDEBUG")
-
 # Maintainer build: No optimizations, lots of warnings, fail on warnings
 set(f "-O0 -g -Wall -Wwrite-strings -Wcast-align")
 set(f "${f} -Wbad-function-cast -Waggregate-return")
