diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index b9adc51ad..229122564 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -37,10 +37,10 @@ Author: 1985 Wayne A. Christopher
 /* globals -- wanted to avoid complicating inp_readall interface */
 static char *library_file[1000];
 static char *library_name[1000][1000];
-struct line *library_ll_ptr[1000][1000];
-struct line *libraries[1000];
-int         num_libraries;
-int         num_lib_names[1000];
+static struct line *library_ll_ptr[1000][1000];
+static struct line *libraries[1000];
+static int  num_libraries;
+static int  num_lib_names[1000];
 static      char *global;
 static char *subckt_w_params[1000];
 static int  num_subckt_w_params;