diff --git a/gds-utils/gds-parser.c b/gds-utils/gds-parser.c
index f16f22b..6fa3d94 100644
--- a/gds-utils/gds-parser.c
+++ b/gds-utils/gds-parser.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/include/gds-render/layer/layer-settings.h b/include/gds-render/layer/layer-settings.h
index 6008e1d..f5ab313 100644
--- a/include/gds-render/layer/layer-settings.h
+++ b/include/gds-render/layer/layer-settings.h
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/include/gds-render/version.h b/include/gds-render/version.h
index 8ab0f1d..2dcf5be 100644
--- a/include/gds-render/version.h
+++ b/include/gds-render/version.h
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/layer/layer-settings.c b/layer/layer-settings.c
index d82bae7..6b9c0fb 100644
--- a/layer/layer-settings.c
+++ b/layer/layer-settings.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/main.c b/main.c
index b4c6cde..56099a1 100644
--- a/main.c
+++ b/main.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/plugins/plugin-example/src/plugin-main.c b/plugins/plugin-example/src/plugin-main.c
index eebbf3b..d6defc5 100644
--- a/plugins/plugin-example/src/plugin-main.c
+++ b/plugins/plugin-example/src/plugin-main.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/plugins/python-renderer/include/python-renderer/gds-render-module.h b/plugins/python-renderer/include/python-renderer/gds-render-module.h
index dd37a5b..b602b40 100644
--- a/plugins/python-renderer/include/python-renderer/gds-render-module.h
+++ b/plugins/python-renderer/include/python-renderer/gds-render-module.h
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/version/version.c b/version/version.c
index 0dc18e6..fe901fc 100644
--- a/version/version.c
+++ b/version/version.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 
diff --git a/widgets/activity-bar.c b/widgets/activity-bar.c
index ebeaebf..f3bbe9e 100644
--- a/widgets/activity-bar.c
+++ b/widgets/activity-bar.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /*
diff --git a/widgets/conv-settings-dialog.c b/widgets/conv-settings-dialog.c
index e0fd775..48f5cdf 100644
--- a/widgets/conv-settings-dialog.c
+++ b/widgets/conv-settings-dialog.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/widgets/layer-element.c b/widgets/layer-element.c
index 08bb7f5..e01c4c3 100644
--- a/widgets/layer-element.c
+++ b/widgets/layer-element.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ * along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /*