diff --git a/dist/sequence-diagram-raphael.js b/dist/sequence-diagram-raphael.js
index 97e123f..9ad7e6e 100644
--- a/dist/sequence-diagram-raphael.js
+++ b/dist/sequence-diagram-raphael.js
@@ -1148,7 +1148,7 @@ _.extend(BaseTheme.prototype, {
       // Bottom box
       this.drawActor(a, y + this.actorsHeight_ + this.signalsHeight_, this.actorsHeight_);
 
-      // Veritical line
+      // Vertical line
       var aX = getCenterX(a);
       this.drawLine(
        aX, y + this.actorsHeight_ - ACTOR_MARGIN,
diff --git a/dist/sequence-diagram-snap.js b/dist/sequence-diagram-snap.js
index a2bc7ec..c54a9d2 100644
--- a/dist/sequence-diagram-snap.js
+++ b/dist/sequence-diagram-snap.js
@@ -1148,7 +1148,7 @@ _.extend(BaseTheme.prototype, {
       // Bottom box
       this.drawActor(a, y + this.actorsHeight_ + this.signalsHeight_, this.actorsHeight_);
 
-      // Veritical line
+      // Vertical line
       var aX = getCenterX(a);
       this.drawLine(
        aX, y + this.actorsHeight_ - ACTOR_MARGIN,
@@ -1275,7 +1275,7 @@ _.extend(BaseTheme.prototype, {
  *  Simplified BSD license.
  */
 /*global Diagram, Snap, WebFont _ */
-// TODO Move defintion of font onto the <svg>, so it can easily be override at each level
+// TODO Move definition of font onto the <svg>, so it can easily be override at each level
 if (typeof Snap != 'undefined') {
 
   var xmlns = 'http://www.w3.org/2000/svg';
diff --git a/dist/sequence-diagram.js b/dist/sequence-diagram.js
index 12ea630..966cead 100644
--- a/dist/sequence-diagram.js
+++ b/dist/sequence-diagram.js
@@ -1147,7 +1147,7 @@ _.extend(BaseTheme.prototype, {
       // Bottom box
       this.drawActor(a, y + this.actorsHeight_ + this.signalsHeight_, this.actorsHeight_);
 
-      // Veritical line
+      // Vertical line
       var aX = getCenterX(a);
       this.drawLine(
        aX, y + this.actorsHeight_ - ACTOR_MARGIN,
@@ -1274,7 +1274,7 @@ _.extend(BaseTheme.prototype, {
  *  Simplified BSD license.
  */
 /*global Diagram, Snap, WebFont _ */
-// TODO Move defintion of font onto the <svg>, so it can easily be override at each level
+// TODO Move definition of font onto the <svg>, so it can easily be override at each level
 if (typeof Snap != 'undefined') {
 
   var xmlns = 'http://www.w3.org/2000/svg';
diff --git a/src/theme-snap.js b/src/theme-snap.js
index 3141b35..982e1ad 100644
--- a/src/theme-snap.js
+++ b/src/theme-snap.js
@@ -4,7 +4,7 @@
  *  Simplified BSD license.
  */
 /*global Diagram, Snap, WebFont _ */
-// TODO Move defintion of font onto the <svg>, so it can easily be override at each level
+// TODO Move definition of font onto the <svg>, so it can easily be override at each level
 if (typeof Snap != 'undefined') {
 
   var xmlns = 'http://www.w3.org/2000/svg';
diff --git a/src/theme.js b/src/theme.js
index f8c014d..6a96971 100644
--- a/src/theme.js
+++ b/src/theme.js
@@ -344,7 +344,7 @@ _.extend(BaseTheme.prototype, {
       // Bottom box
       this.drawActor(a, y + this.actorsHeight_ + this.signalsHeight_, this.actorsHeight_);
 
-      // Veritical line
+      // Vertical line
       var aX = getCenterX(a);
       this.drawLine(
        aX, y + this.actorsHeight_ - ACTOR_MARGIN,