diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ed5845d4..1a37aa0c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -71,14 +71,17 @@ if (PKG_CONFIG_FOUND AND WITH_FFMPEG)
   pkg_check_modules (AVFORMAT REQUIRED libavformat)
   pkg_check_modules (AVUTIL REQUIRED libavutil)
   pkg_check_modules (AVCODEC REQUIRED libavcodec)
+  pkg_check_modules (SWSCALE REQUIRED libswscale)
 
   set (EXTRA_LIBS ${EXTRA_LIBS} ${AVFORMAT_LIBRARIES})
   set (EXTRA_LIBS ${EXTRA_LIBS} ${AVUTIL_LIBRARIES})
   set (EXTRA_LIBS ${EXTRA_LIBS} ${AVCODEC_LIBRARIES})
+  set (EXTRA_LIBS ${EXTRA_LIBS} ${SWSCALE_LIBRARIES})
 
   set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${AVFORMAT_INCLUDE_DIRS})
   set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${AVUTIL_INCLUDE_DIRS})
   set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${AVCODEC_INCLUDE_DIRS})
+  set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${SWSCALE_INCLUDE_DIRS})
 
   set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DENABLE_FFMPEG")
   set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DENABLE_HARDSUBX")
diff --git a/src/lib_ccx/CMakeLists.txt b/src/lib_ccx/CMakeLists.txt
index e44416bb..b9951c0c 100644
--- a/src/lib_ccx/CMakeLists.txt
+++ b/src/lib_ccx/CMakeLists.txt
@@ -8,14 +8,17 @@ if (WITH_FFMPEG)
     pkg_check_modules (AVFORMAT REQUIRED libavformat)
     pkg_check_modules (AVUTIL REQUIRED libavutil)
     pkg_check_modules (AVCODEC REQUIRED libavcodec)
+    pkg_check_modules (SWSCALE REQUIRED libswscale)
 
     set (EXTRA_LIBS ${EXTRA_LIBS} ${AVFORMAT_LIBRARIES})
     set (EXTRA_LIBS ${EXTRA_LIBS} ${AVUTIL_LIBRARIES})
     set (EXTRA_LIBS ${EXTRA_LIBS} ${AVCODEC_LIBRARIES})
+    set (EXTRA_LIBS ${EXTRA_LIBS} ${SWSCALE_LIBRARIES})
 
     set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${AVFORMAT_INCLUDE_DIRS})
     set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${AVUTIL_INCLUDE_DIRS})
     set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${AVCODEC_INCLUDE_DIRS})
+    set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${SWSCALE_INCLUDE_DIRS})
 
   set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DENABLE_FFMPEG")
   set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DENABLE_HARDSUBX")