diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5213015..09b8266 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,7 @@ set(SOURCE
   ${LATEX_SOURCES}
 )
 
+add_compile_options(-Wall)
 
 add_executable(${PROJECT_NAME} ${SOURCE} ${CMAKE_CURRENT_BINARY_DIR}/glade/resources.c)
 add_dependencies(${PROJECT_NAME} glib-resources)
diff --git a/gds-parser/gds-parser.c b/gds-parser/gds-parser.c
index b43006e..785aad4 100644
--- a/gds-parser/gds-parser.c
+++ b/gds-parser/gds-parser.c
@@ -610,6 +610,19 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 		}
 
 		switch (rec_type) {
+
+		case HEADER:
+		case UNITS:
+		case ENDLIB:
+		case ENDSTR:
+		case BOUNDARY:
+		case PATH:
+		case SREF:
+		case ENDEL:
+		case BOX:
+		case INVALID:
+			break;
+
 		case BGNLIB:
 			/* Parse date record */
 			gds_parse_date(workbuff, read, &current_lib->mod_time, &current_lib->access_time);
diff --git a/layer-selector.c b/layer-selector.c
index 13b0e45..93e534f 100644
--- a/layer-selector.c
+++ b/layer-selector.c
@@ -29,13 +29,6 @@ static GtkWidget *global_load_button;
 static GtkWidget *global_save_button;
 static GtkListBox *global_list_box;
 
-static void delete_layer_widget(GtkWidget *widget)
-{
-
-	gtk_widget_destroy(widget);
-}
-
-
 void delete_layer_info_struct(struct layer_info *info)
 {
 	if (info)
@@ -271,7 +264,6 @@ static void load_layer_mapping_from_file(gchar *file_name)
 	char *name;
 	gboolean export;
 	int layer;
-	int target_layer;
 	GdkRGBA color;
 	int result;
 	GList *rows;
@@ -295,15 +287,13 @@ static void load_layer_mapping_from_file(gchar *file_name)
 		gtk_container_remove(GTK_CONTAINER(global_list_box), GTK_WIDGET(le));
 	}
 
-	target_layer = 0;
-
 	while((result = load_csv_line(dstream, &export, &name, &layer, &color)) >= 0) {
 		/* skip broken line */
 		if (result == 1)
 			continue;
 
 		/* Add rows in the same order as in file */
-		if (le = find_layer_element_in_list(rows, layer)) {
+		if ((le = find_layer_element_in_list(rows, layer))) {
 			gtk_list_box_insert(global_list_box, GTK_WIDGET(le), -1);
 
 			layer_element_set_color(le, &color);
diff --git a/tree-renderer/tree-store.c b/tree-renderer/tree-store.c
index d111055..aae8af0 100644
--- a/tree-renderer/tree-store.c
+++ b/tree-renderer/tree-store.c
@@ -8,10 +8,8 @@ static gboolean tree_sel_func(GtkTreeSelection *selection,
 				gboolean path_currently_selected,
 				gpointer data)
 {
-	static int cnt = 0;
 	GtkTreeIter iter;
 	struct gds_cell *cell;
-	gchar *p;
 
 	gtk_tree_model_get_iter(model, &iter, path);
 	gtk_tree_model_get(model, &iter, CELL_SEL_CELL, &cell, -1);