diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3ba39e736f40bcf0b1d543fcb507343706e2a165..3cd2410b26d8418ac68dc8f8d21dcb3d30d41096 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -17,11 +17,11 @@ PROJECT(qtsflphone)
 SET(LOCAL_CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/")
 SET(CMAKE_MODULE_PATH "${LOCAL_CMAKE_MODULE_PATH}")
 
-IF(${ENABLE_VIDEO} MATCHES true)
+IF(NOT ${ENABLE_VIDEO} MATCHES false)
    MESSAGE("VIDEO enabled")
    SET(ENABLE_VIDEO 1 CACHE BOOLEAN "Enable video")
    add_definitions( -DENABLE_VIDEO=true )
-ENDIF(${ENABLE_VIDEO} MATCHES true)
+ENDIF(NOT ${ENABLE_VIDEO} MATCHES false)
 
 IF(${ENABLE_QT5} MATCHES true)
    FIND_PACKAGE(Qt5Core)