diff --git a/src/USER-ATC/Install.sh b/src/USER-ATC/Install.sh
index e55e1c7d65..307b9cab00 100755
--- a/src/USER-ATC/Install.sh
+++ b/src/USER-ATC/Install.sh
@@ -9,8 +9,9 @@ if (test $1 = 1) then
     sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/atc |' ../Makefile.package
     sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/atc |' ../Makefile.package
     sed -i -e 's|^PKG_LIB =[ \t]*|&-latc |' ../Makefile.package
-    sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(user-atc_SYSPATH) |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSINC =[ \t]*|&$(user-atc_SYSINC) |' ../Makefile.package
     sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(user-atc_SYSLIB) |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(user-atc_SYSPATH) |' ../Makefile.package
   fi
 
   cp fix_atc.h ..