diff --git a/install.sh b/install.sh
index d458850..8c2baee 100755
--- a/install.sh
+++ b/install.sh
@@ -7,7 +7,7 @@ if [ "$1" != "" ]; then
     cp agbcc $1/tools/agbcc/bin/
     cp old_agbcc $1/tools/agbcc/bin/
     cp ginclude/* $1/tools/agbcc/include/
-    cp libc/include/* $1/tools/agbcc/include/
+    cp -R libc/include/ $1/tools/agbcc/include/
     cp libgcc.a $1/tools/agbcc/lib/
     cp libc.a $1/tools/agbcc/lib/
 else