diff --git a/cmake/modules/PackageHelper.cmake b/cmake/modules/PackageHelper.cmake
--- a/cmake/modules/PackageHelper.cmake
+++ b/cmake/modules/PackageHelper.cmake
@@ -23,6 +23,7 @@
 		WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
 		OUTPUT_VARIABLE _git_ignored_files
 		RESULT_VARIABLE _git_result
+		ERROR_QUIET
 	)
 
 	# If something goes wrong with the git command, don't proceed the output.
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -222,6 +222,7 @@
 			OUTPUT_VARIABLE GIT_ROOT
 			RESULT_VARIABLE GIT_RESULT
 			OUTPUT_STRIP_TRAILING_WHITESPACE
+			ERROR_QUIET
 		)
 
 		if(GIT_RESULT EQUAL 0)