diff --git a/qrenderdoc/Widgets/Extended/RDTextEdit.cpp b/qrenderdoc/Widgets/Extended/RDTextEdit.cpp
index 45615ceee..2cb01d9e1 100644
--- a/qrenderdoc/Widgets/Extended/RDTextEdit.cpp
+++ b/qrenderdoc/Widgets/Extended/RDTextEdit.cpp
@@ -229,17 +229,20 @@ void RDTextEdit::keyPressEvent(QKeyEvent *e)
 
   bool completionShortcut = false;
 
-  // tab triggers completion
-  if(e->key() == Qt::Key_Tab)
-    completionShortcut = true;
-
-  // as does ctrl-space and ctrl-E
-  if(e->modifiers() & Qt::ControlModifier)
+  if(m_Completer && m_CompletionModel)
   {
-    if(e->key() == Qt::Key_E)
-      completionShortcut = true;
-    if(e->key() == Qt::Key_Space)
+    // tab triggers completion
+    if(e->key() == Qt::Key_Tab)
       completionShortcut = true;
+
+    // as does ctrl-space and ctrl-E
+    if(e->modifiers() & Qt::ControlModifier)
+    {
+      if(e->key() == Qt::Key_E)
+        completionShortcut = true;
+      if(e->key() == Qt::Key_Space)
+        completionShortcut = true;
+    }
   }
 
   // add ctrl-end and ctrl-home shortcuts, which aren't implemented for read-only edits