diff --git a/interface/src/ui/overlays/Text3DOverlay.cpp b/interface/src/ui/overlays/Text3DOverlay.cpp
index 5928e328ba..3a3a23e828 100644
--- a/interface/src/ui/overlays/Text3DOverlay.cpp
+++ b/interface/src/ui/overlays/Text3DOverlay.cpp
@@ -180,7 +180,7 @@ void Text3DOverlay::setProperties(const QScriptValue& properties) {
 
 }
 
-float Text3DOverlay::textWidth(const QString& text) {
+float Text3DOverlay::textWidth(const QString& text) const {
     QFont font(SANS_FONT_FAMILY, FIXED_FONT_POINT_SIZE);  // Same font properties as render()
     QFontMetrics fontMetrics(font);
     float scaleFactor = _lineHeight * LINE_SCALE_RATIO / (float)FIXED_FONT_POINT_SIZE;
diff --git a/interface/src/ui/overlays/Text3DOverlay.h b/interface/src/ui/overlays/Text3DOverlay.h
index f0369b4206..e9969b1cad 100644
--- a/interface/src/ui/overlays/Text3DOverlay.h
+++ b/interface/src/ui/overlays/Text3DOverlay.h
@@ -48,7 +48,7 @@ public:
 
     virtual void setProperties(const QScriptValue& properties);
 
-    float textWidth(const QString& text);  // Meters
+    float textWidth(const QString& text) const;  // Meters
 
 private:
     void enableClipPlane(GLenum plane, float x, float y, float z, float w);
diff --git a/interface/src/ui/overlays/TextOverlay.cpp b/interface/src/ui/overlays/TextOverlay.cpp
index 9f194b75dd..356ba419b0 100644
--- a/interface/src/ui/overlays/TextOverlay.cpp
+++ b/interface/src/ui/overlays/TextOverlay.cpp
@@ -125,7 +125,7 @@ void TextOverlay::setProperties(const QScriptValue& properties) {
 }
 
 
-float TextOverlay::textWidth(const QString& text) {
+float TextOverlay::textWidth(const QString& text) const {
     QFont font(SANS_FONT_FAMILY, _fontSize, DEFAULT_FONT_WEIGHT);  // Same font properties as render()
     QFontMetrics fontMetrics(font);
     return fontMetrics.width(qPrintable(text));
diff --git a/interface/src/ui/overlays/TextOverlay.h b/interface/src/ui/overlays/TextOverlay.h
index 2922d747ca..9fc6480eb7 100644
--- a/interface/src/ui/overlays/TextOverlay.h
+++ b/interface/src/ui/overlays/TextOverlay.h
@@ -54,7 +54,7 @@ public:
 
     virtual void setProperties(const QScriptValue& properties);
 
-    float textWidth(const QString& text);  // Pixels
+    float textWidth(const QString& text) const;  // Pixels
 
 private: