diff --git a/cockatrice/CMakeLists.txt b/cockatrice/CMakeLists.txt
index 1fe34d7f..01643e4a 100644
--- a/cockatrice/CMakeLists.txt
+++ b/cockatrice/CMakeLists.txt
@@ -175,7 +175,9 @@ if (NOT QT_QTMULTIMEDIA_FOUND)
 	FIND_PACKAGE(QtMobility REQUIRED)
 endif (NOT QT_QTMULTIMEDIA_FOUND)
 FIND_PACKAGE(Protobuf REQUIRED)
+
 set(CMAKE_BUILD_TYPE Release)
+set(CMAKE_CXX_FLAGS_RELEASE "-s -O2")
 
 QT4_WRAP_CPP(cockatrice_HEADERS_MOC ${cockatrice_HEADERS})
 QT4_ADD_TRANSLATION(${cockatrice_QM} ${cockatrice_TS})
diff --git a/oracle/CMakeLists.txt b/oracle/CMakeLists.txt
index 6bedd694..05392f1a 100644
--- a/oracle/CMakeLists.txt
+++ b/oracle/CMakeLists.txt
@@ -10,6 +10,7 @@ SET(QT_USE_QTSVG TRUE)
 FIND_PACKAGE(Qt4 REQUIRED)
 
 set(CMAKE_BUILD_TYPE Release)
+set(CMAKE_CXX_FLAGS_RELEASE "-s -O2")
 
 QT4_WRAP_CPP(oracle_HEADERS_MOC ${oracle_HEADERS})
 INCLUDE(${QT_USE_FILE})
diff --git a/servatrice/CMakeLists.txt b/servatrice/CMakeLists.txt
index 4f5061f8..3dbb61b3 100644
--- a/servatrice/CMakeLists.txt
+++ b/servatrice/CMakeLists.txt
@@ -25,7 +25,9 @@ SET(QT_USE_QTSQL TRUE)
 FIND_PACKAGE(Qt4 REQUIRED)
 FIND_PACKAGE(Protobuf REQUIRED)
 FIND_PACKAGE(Libgcrypt REQUIRED)
+
 set(CMAKE_BUILD_TYPE Release)
+set(CMAKE_CXX_FLAGS_RELEASE "-O2")
 
 QT4_WRAP_CPP(servatrice_HEADERS_MOC ${servatrice_HEADERS})