diff --git a/Installation/install_cgal b/Installation/install_cgal
index c073f304dc8..b64b3c22c7c 100755
--- a/Installation/install_cgal
+++ b/Installation/install_cgal
@@ -1039,11 +1039,13 @@ set_compiler_flags()
 	*CYGWIN*g++*)
 	    #### settings for gcc on Cygwin
 	    ADDITIONAL_CXXFLAGS="-Wall"
+	    SUFFIX_LIST=".obj .exe"
 	    EXE_EXT=".exe"
 	    ;;
 	*MINGW*g++*)
 	    #### settings for gcc on mingw
 	    ADDITIONAL_CXXFLAGS="-Wall"
+	    SUFFIX_LIST=".obj .exe"
 	    EXE_EXT=".exe"
 	    ;;
 	*Darwin*g++*)
@@ -4112,18 +4114,10 @@ create_include_makefile()
   makefile_header "suffixes and rules" >> ${FILE}
   ${_printf} "%s\n" ".SUFFIXES:  ${SUFFIX_LIST} .cpp .clean" >> ${FILE}
   if [ -n "${EXE_EXT}" ]; then
-    case ${CGAL_OS_COMPILER} in
-	*CYGWIN*g++*) ${_printf} "\n.o:\n" >> ${FILE};;
-	*)            ${_printf} "\n.C:\n" >> ${FILE};;
-    esac
+    ${_printf} "\n.C:\n" >> ${FILE}
     ${_printf} "\t%s %s%s\n" "\$(MAKE)" '$*' "${EXE_EXT}" >> ${FILE}
-
-    case ${CGAL_OS_COMPILER} in
-	*CYGWIN*g++*) ${_printf} "\n.o:\n" >> ${FILE};;
-	*)            ${_printf} "\n.cpp:\n" >> ${FILE};;
-    esac
+    ${_printf} "\n.cpp:\n" >> ${FILE}
     ${_printf} "\t%s %s%s\n" "\$(MAKE)" '$*' "${EXE_EXT}" >> ${FILE}
-
   fi
   ${_printf} "\n.C.clean:\n" >> ${FILE}
   ${_printf} "\trm -f \$*%s" "${EXE_EXT}" >> ${FILE}