diff --git a/lib/ui/stdtoolbars.inc b/lib/ui/stdtoolbars.inc
index 7fcc99e671..8c085bb606 100644
--- a/lib/ui/stdtoolbars.inc
+++ b/lib/ui/stdtoolbars.inc
@@ -675,7 +675,7 @@ ToolbarSet
 		Item "Bbbk" "math-insert \Bbbk"
 		Item "backprime" "math-insert \backprime"
 		Item "varnothing" "math-insert \varnothing"
-		Item "diamond2" "math-insert \Diamond"
+		Item "Diamond" "math-insert \Diamond"
 		Item "blacktriangle" "math-insert \blacktriangle"
 		Item "blacktriangledown" "math-insert \blacktriangledown"
 		Item "blacksquare" "math-insert \blacksquare"
diff --git a/src/frontends/qt4/GuiApplication.cpp b/src/frontends/qt4/GuiApplication.cpp
index 8878ccbb20..1b1daf82d5 100644
--- a/src/frontends/qt4/GuiApplication.cpp
+++ b/src/frontends/qt4/GuiApplication.cpp
@@ -226,6 +226,7 @@ PngMap sorted_png_map[] = {
 	{ "Cap", "cap2" },
 	{ "Cup", "cup2" },
 	{ "Delta", "delta2" },
+	{ "Diamond", "diamond2" },
 	{ "Downarrow", "downarrow2" },
 	{ "Gamma", "gamma2" },
 	{ "Lambda", "lambda2" },