diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index 6a0e50de..7fc1c49b 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -59,6 +59,7 @@ if( (BUILD_QUANTA) OR (BUILD_KXSLDBG) OR (BUILD_KLINKSTATUS) )
     tde_execute_process(
         COMMAND ${PKG_CONFIG_EXECUTABLE} --variable=CXXFLAGS icu-uc
         OUTPUT_VARIABLE ICU_CXXFLAGS
+        OUTPUT_STRIP_TRAILING_WHITESPACE
     )