diff --git a/epan/Makefile.am b/epan/Makefile.am
index 1981a204fc..4de9a1a287 100644
--- a/epan/Makefile.am
+++ b/epan/Makefile.am
@@ -192,7 +192,7 @@ def_sym_filter_symbols =
 if !HAVE_PLUGINS
 # If we're not building plugins, these symbols don't get built.
 # Keep them out of the symbol list.
-def_sym_filter_symbols += /^register_all_wiretap_modules/ || /^register_all_plugin_tap_listeners/ || /^plugin_list/ {next;};
+def_sym_filter_symbols += /^register_all_plugin_tap_listeners/ || /^plugin_list/ {next;};
 endif
 
 if !HAVE_LIBPY
diff --git a/epan/libwireshark.def b/epan/libwireshark.def
index 78f00ffac4..5e83b94442 100644
--- a/epan/libwireshark.def
+++ b/epan/libwireshark.def
@@ -910,7 +910,6 @@ reassembled_table_init
 register_all_plugin_tap_listeners
 register_all_protocols
 register_all_protocol_handoffs
-register_all_wiretap_modules
 register_ber_oid_dissector
 register_ber_oid_dissector_handle
 register_ber_oid_syntax
diff --git a/epan/plugins.c b/epan/plugins.c
index 3042a65374..d7695cc839 100644
--- a/epan/plugins.c
+++ b/epan/plugins.c
@@ -60,6 +60,9 @@ wslua_plugin *wslua_plugin_list = NULL;
 /* linked list of all plugins */
 plugin *plugin_list = NULL;
 
+static void register_all_wiretap_modules(void);
+static void register_all_codecs(void);
+
 /*
  * add a new plugin to the list
  * returns :
@@ -475,7 +478,7 @@ register_all_plugin_tap_listeners(void)
     }
 }
 
-void
+static void
 register_all_wiretap_modules(void)
 {
     plugin *pt_plug;
@@ -491,7 +494,7 @@ register_all_wiretap_modules(void)
     }
 }
 
-void
+static void
 register_all_codecs(void)
 {
     plugin *pt_plug;
diff --git a/epan/plugins.h b/epan/plugins.h
index ffa2672402..0892857d17 100644
--- a/epan/plugins.h
+++ b/epan/plugins.h
@@ -52,8 +52,6 @@ extern void init_plugins(void);
 extern void register_all_plugin_registrations(void);
 extern void register_all_plugin_handoffs(void);
 extern void register_all_plugin_tap_listeners(void);
-extern void register_all_wiretap_modules(void);
-extern void register_all_codecs(void);
 extern void plugins_dump_all(void);
 
 typedef struct _wslua_plugin {