diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index db8ccfb80..50e6870dc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -5,7 +5,7 @@ project (slic3r)
 # only on newer GCCs: -ftemplate-backtrace-limit=0
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -DM_PI=3.14159265358979323846 -D_GLIBCXX_USE_C99 -DHAS_BOOL -DNOGDI -DBOOST_ASIO_DISABLE_KQUEUE")
 
-execute_process(COMMAND git rev-parse --short HEAD OUTPUT_VARIABLE GIT_VERSION)
+execute_process(COMMAND git rev-parse --short HEAD OUTPUT_VARIABLE GIT_VERSION ERROR_QUIET)
 
 set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall -DSLIC3R_DEBUG")
 
diff --git a/src/GUI/AboutDialog.hpp b/src/GUI/AboutDialog.hpp
index fea496b4a..f506cdfdd 100644
--- a/src/GUI/AboutDialog.hpp
+++ b/src/GUI/AboutDialog.hpp
@@ -13,7 +13,7 @@
 
 
 #ifndef SLIC3R_BUILD_COMMIT
-#define SLIC3R_BUILD_COMMIT "(Unknown revision)"
+#define SLIC3R_BUILD_COMMIT (Unknown revision)
 #endif 
 
 #define VER1_(x) #x