diff --git a/install.sh b/install.sh
index 2c6b19c..8d2f143 100755
--- a/install.sh
+++ b/install.sh
@@ -13,8 +13,7 @@ chmod 755 cppipe
 mv cppipe ${PREFIX}/bin
 
 # Install headers
-mkdir -p ${PREFIX}/include/cppipe
-chmod 755 ${PREFIX}/include/cppipe
+mkdir -p -m755 ${PREFIX}/include/cppipe
 cp basicTypes.h commands.hpp commands.inl childProcess.hpp childProcess.inl ${PREFIX}/include/cppipe
 chmod 644 ${PREFIX}/include/cppipe/*