diff --git a/main.c b/main.c
index 5309c4d..cdf2b19 100644
--- a/main.c
+++ b/main.c
@@ -20,6 +20,7 @@
 #include <stdio.h>
 #include <gtk/gtk.h>
 #include <glib.h>
+#include <locale.h>
 #include "main-window.h"
 #include "command-line.h"
 #include "external-renderer.h"
@@ -85,8 +86,6 @@ static int start_gui(int argc, char **argv)
 	g_application_register(G_APPLICATION(gapp), NULL, NULL);
 	g_signal_connect(gapp, "activate", G_CALLBACK(gapp_activate), &appdata);
 
-
-
 	menu = g_menu_new();
 	m_quit = g_menu_new();
 	m_about = g_menu_new();
@@ -115,6 +114,7 @@ int main(int argc, char **argv)
 	GOptionContext *context;
 	gchar *gds_name;
 	gchar *basename;
+	struct lconv *temp_locale;
 	gchar *pdfname = NULL, *texname = NULL, *mappingname = NULL, *cellname = NULL, *svgname = NULL;
 	gboolean tikz = FALSE, pdf = FALSE, pdf_layers = FALSE, pdf_standalone = FALSE, svg = FALSE;
 	gchar *custom_library_path = NULL;
@@ -122,6 +122,11 @@ int main(int argc, char **argv)
 	int scale = 1000;
 	int app_status;
 
+	/* Set locale for layer mapping file */
+	setlocale(LC_NUMERIC, "");
+	temp_locale     = localeconv();
+	strcpy(temp_locale->decimal_point, ".");
+	strcpy(temp_locale->thousands_sep, "'");
 
 	GOptionEntry entries[] = {
 	  {"tikz", 't', 0, G_OPTION_ARG_NONE, &tikz, "Output TikZ code", NULL },