diff --git a/src/core/core.c b/src/core/core.c
index 647eb6b4..b6362ffa 100644
--- a/src/core/core.c
+++ b/src/core/core.c
@@ -49,7 +49,7 @@
 
 #ifdef HAVE_SYS_RESOURCE_H
 #  include <sys/resource.h>
-   struct rlimit orig_core_rlimit;
+   static struct rlimit orig_core_rlimit;
 #endif
 
 void chat_commands_init(void);
diff --git a/src/core/servers-setup.c b/src/core/servers-setup.c
index b442a41d..1eb69491 100644
--- a/src/core/servers-setup.c
+++ b/src/core/servers-setup.c
@@ -31,7 +31,7 @@
 
 GSList *setupservers;
 
-char *old_source_host;
+static char *old_source_host;
 int source_host_ok; /* Use source_host_ip .. */
 IPADDR *source_host_ip4, *source_host_ip6; /* Resolved address */
 
diff --git a/src/fe-common/core/fe-recode.c b/src/fe-common/core/fe-recode.c
index cb5b28ee..b3092a09 100644
--- a/src/fe-common/core/fe-recode.c
+++ b/src/fe-common/core/fe-recode.c
@@ -33,9 +33,9 @@
 #  include <langinfo.h>
 #endif
 
-char *recode_fallback = NULL;
-char *recode_out_default = NULL;
-char *term_charset = NULL;
+static char *recode_fallback = NULL;
+static char *recode_out_default = NULL;
+static char *term_charset = NULL;
 
 static const char *fe_recode_get_target (WI_ITEM_REC *witem)
 {