diff --git a/pluma/pluma-message-bus.c b/pluma/pluma-message-bus.c
index 043c4da..84551bf 100644
--- a/pluma/pluma-message-bus.c
+++ b/pluma/pluma-message-bus.c
@@ -141,7 +141,7 @@ enum
 	LAST_SIGNAL
 };
 
-static guint message_bus_signals[LAST_SIGNAL];
+static guint message_bus_signals[LAST_SIGNAL] = { 0 };
 
 static void pluma_message_bus_dispatch_real (PlumaMessageBus *bus,
 				 	     PlumaMessage    *message);
diff --git a/pluma/pluma-panel.c b/pluma/pluma-panel.c
index 68438b8..8e2654a 100644
--- a/pluma/pluma-panel.c
+++ b/pluma/pluma-panel.c
@@ -81,7 +81,7 @@ enum {
 	LAST_SIGNAL
 };
 
-static guint signals[LAST_SIGNAL];
+static guint signals[LAST_SIGNAL] = { 0 };
 
 static GObject	*pluma_panel_constructor	(GType type,
 						 guint n_construct_properties,
diff --git a/pluma/pluma-plugins-engine.c b/pluma/pluma-plugins-engine.c
index 306caf2..27f71dd 100644
--- a/pluma/pluma-plugins-engine.c
+++ b/pluma/pluma-plugins-engine.c
@@ -66,7 +66,7 @@ enum
 	LAST_SIGNAL
 };
 
-static guint signals[LAST_SIGNAL];
+static guint signals[LAST_SIGNAL] = { 0 };
 
 G_DEFINE_TYPE(PlumaPluginsEngine, pluma_plugins_engine, G_TYPE_OBJECT)
 
diff --git a/pluma/smclient/eggsmclient.c b/pluma/smclient/eggsmclient.c
index 15b4fad..0cc3818 100755
--- a/pluma/smclient/eggsmclient.c
+++ b/pluma/smclient/eggsmclient.c
@@ -38,7 +38,7 @@ enum {
   LAST_SIGNAL
 };
 
-static guint signals[LAST_SIGNAL];
+static guint signals[LAST_SIGNAL] = { 0 };
 
 struct _EggSMClientPrivate {
   GKeyFile *state_file;