diff --git a/sources/CMakeLists.txt b/sources/CMakeLists.txt
index 1dbf6f30..2f1c3f02 100644
--- a/sources/CMakeLists.txt
+++ b/sources/CMakeLists.txt
@@ -1,7 +1,7 @@
 
 
 
-set(CC_EXTERNAL_SROUCES
+set(CC_EXTERNAL_SOURCES
   ${CMAKE_CURRENT_LIST_DIR}/tinyxml2/tinyxml2.cpp
   ${CMAKE_CURRENT_LIST_DIR}/tinyxml2/tinyxml2.h