diff --git a/lib/jkqtmathtext/nodes/jkqtmathtextinstructionnode.cpp b/lib/jkqtmathtext/nodes/jkqtmathtextinstructionnode.cpp
index 84f41cf5ec..356c7aa0b2 100644
--- a/lib/jkqtmathtext/nodes/jkqtmathtextinstructionnode.cpp
+++ b/lib/jkqtmathtext/nodes/jkqtmathtextinstructionnode.cpp
@@ -357,6 +357,8 @@ void JKQTMathTextModifiedTextPropsInstructionNode::fillInstructions()
             ev.strike=true;
         }, 0);
         instructions["strike"]= i;
+        instructions["st"]= i;
+        instructions["sout"]= i;
     }
     {
         InstructionProperties i([](JKQTMathTextEnvironment& ev, const QStringList& /*parameters*/) {