diff --git a/src/highlighting.c b/src/highlighting.c
index 03846b1c9..bbaf9b6f1 100644
--- a/src/highlighting.c
+++ b/src/highlighting.c
@@ -58,7 +58,7 @@
 #define GEANY_WHITESPACE_CHARS " \t" "!\"#$%&'()*+,-./:;<=>?@[\\]^`{|}~"
 
 
-static gchar *whitespace_chars;
+static gchar *whitespace_chars = NULL;
 
 
 typedef struct
@@ -112,7 +112,7 @@ static struct
 	gint fold_draw_line;
 
 	gchar			*wordchars;
-} common_style_set;
+} common_style_set = { { { 0 } }, 0, 0, 0, NULL };
 
 
 /* For filetypes.common [named_styles] section.
@@ -577,7 +577,9 @@ static void styleset_common_init(GKeyFile *config, GKeyFile *config_home)
 	get_keyfile_int(config, config_home, "styling", "line_height",
 		0, 0, &common_style_set.styling[GCS_LINE_HEIGHT]);
 
+	g_free(common_style_set.wordchars);
 	get_keyfile_wordchars(config, config_home, &common_style_set.wordchars);
+	g_free(whitespace_chars);
 	whitespace_chars = get_keyfile_whitespace_chars(config, config_home);
 }
 
diff --git a/src/keyfile.c b/src/keyfile.c
index 84e32eab5..1cffe0090 100644
--- a/src/keyfile.c
+++ b/src/keyfile.c
@@ -673,7 +673,11 @@ void configuration_load_session_files(GKeyFile *config, gboolean read_recent_fil
 
 	/* the project may load another list than the main setting */
 	if (session_files != NULL)
+	{
+		foreach_ptr_array(tmp_array, i, session_files)
+			g_strfreev(tmp_array);
 		g_ptr_array_free(session_files, TRUE);
+	}
 
 	session_files = g_ptr_array_new();
 	have_session_files = TRUE;
diff --git a/src/project.c b/src/project.c
index b66e3aba6..202a8b062 100644
--- a/src/project.c
+++ b/src/project.c
@@ -440,6 +440,7 @@ static void destroy_project(gboolean open_default)
 	g_free(app->project->description);
 	g_free(app->project->file_name);
 	g_free(app->project->base_path);
+	g_strfreev(app->project->file_patterns);
 
 	g_free(app->project);
 	app->project = NULL;
@@ -813,7 +814,7 @@ static gboolean update_config(const PropertyDialogElements *e, gboolean new_proj
 		buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(e->description));
 		gtk_text_buffer_get_start_iter(buffer, &start);
 		gtk_text_buffer_get_end_iter(buffer, &end);
-		SETPTR(p->description, g_strdup(gtk_text_buffer_get_text(buffer, &start, &end, FALSE)));
+		SETPTR(p->description, gtk_text_buffer_get_text(buffer, &start, &end, FALSE));
 
 		foreach_slist(node, stash_groups)
 			stash_group_update(node->data, e->dialog);