diff --git a/cmake/ci.cmake b/cmake/ci.cmake
index c93855bda..12a7fe7b5 100644
--- a/cmake/ci.cmake
+++ b/cmake/ci.cmake
@@ -840,7 +840,7 @@ endforeach()
 ###############################################################################
 
 add_custom_target(ci_icpc
-    COMMAND source /opt/intel/oneapi/setvars.sh
+    COMMAND . /opt/intel/oneapi/setvars.sh
     COMMAND ${CMAKE_COMMAND}
         -DCMAKE_BUILD_TYPE=Debug -GNinja
         -DCMAKE_C_COMPILER=icc -DCMAKE_CXX_COMPILER=icpc