diff --git a/CMakeLists.txt b/CMakeLists.txt
index 25ed4d9eb..a6cbadc3f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,7 +37,7 @@ endif (EXISTS ${CMAKE_SOURCE_DIR}/src/libshared/src AND EXISTS ${CMAKE_SOURCE_DI
 message ("-- Looking for SHA1 references")
 if (EXISTS ${CMAKE_SOURCE_DIR}/.git/index)
   set (HAVE_COMMIT true)
-  execute_process (COMMAND git log -1 --pretty=format:%h
+  execute_process (COMMAND git log -1 --pretty=format:%h --no-show-signature
                    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
                    OUTPUT_VARIABLE COMMIT)
   configure_file ( ${CMAKE_SOURCE_DIR}/commit.h.in