diff --git a/CMakeLists.txt b/CMakeLists.txt
index caef0a80..b836faad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,7 +41,8 @@ set(CMAKE_C_STANDARD_REQUIRED true)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_C_STANDARD 11)
 include(GenerateExportHeader)
-set(CMAKE_CXX_FLAGS " -Wall -pedantic -Werror -Wno-deprecated-declarations -D_GLIBCXX_USE_CXX11_ABI=0 -fstack-protector-strong --param=ssp-buffer-size=4 -O3 -D_FORTIFY_SOURCE=2 ${CMAKE_CXX_FLAGS}")
+set(CMAKE_CXX_FLAGS " -Wall -pedantic -Werror -Wno-deprecated-declarations -D_GLIBCXX_USE_CXX11_ABI=0 -fstack-protector-strong --param=ssp-buffer-size=4 ${CMAKE_CXX_FLAGS}")
+set(CMAKE_CXX_FLAGS_RELEASE "-O3 -D_FORTIFY_SOURCE=2" ${CMAKE_CXX_FLAGS_RELEASE})
 if(UNIX AND APPLE)
     set(CMAKE_CXX_FLAGS " -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
 endif()
@@ -58,7 +59,7 @@ set(Launcher_NEWS_RSS_URL "https://multimc.org/rss.xml" CACHE STRING "URL to fet
 ######## Set version numbers ########
 set(Launcher_VERSION_MAJOR    0)
 set(Launcher_VERSION_MINOR    6)
-set(Launcher_VERSION_HOTFIX   15)
+set(Launcher_VERSION_HOTFIX   16)
 
 # Build number
 set(Launcher_VERSION_BUILD -1 CACHE STRING "Build number. -1 for no build number.")