diff --git a/src/plugins/cppeditor/cppsnippeteditordecorator.cpp b/src/plugins/cppeditor/cppsnippeteditordecorator.cpp
index 31acb5d5aed..b3327a683b7 100644
--- a/src/plugins/cppeditor/cppsnippeteditordecorator.cpp
+++ b/src/plugins/cppeditor/cppsnippeteditordecorator.cpp
@@ -31,6 +31,7 @@
 #include "cpphighlighter.h"
 #include "cppeditor.h"
 #include "cppqtstyleindenter.h"
+#include "cppautocompleter.h"
 
 #include <texteditor/texteditorsettings.h>
 #include <texteditor/fontsettings.h>
@@ -62,6 +63,6 @@ void CppSnippetEditorDecorator::apply(TextEditor::SnippetEditor *editor) const
         fs.toTextCharFormats(CPPEditor::highlighterFormatCategories());
     highlighter->setFormats(formats.constBegin(), formats.constEnd());
     editor->installSyntaxHighlighter(highlighter);
-
     editor->setIndenter(new CppQtStyleIndenter);
+    editor->setAutoCompleter(new CppAutoCompleter);
 }
diff --git a/src/plugins/qmljseditor/qmljssnippeteditordecorator.cpp b/src/plugins/qmljseditor/qmljssnippeteditordecorator.cpp
index ef0ad82f9c9..6275ca36bde 100644
--- a/src/plugins/qmljseditor/qmljssnippeteditordecorator.cpp
+++ b/src/plugins/qmljseditor/qmljssnippeteditordecorator.cpp
@@ -31,6 +31,7 @@
 #include "qmljshighlighter.h"
 #include "qmljseditor.h"
 #include "qmljsindenter.h"
+#include "qmljsautocompleter.h"
 
 #include <texteditor/texteditorsettings.h>
 #include <texteditor/fontsettings.h>
@@ -60,6 +61,6 @@ void QmlJSSnippetEditorDecorator::apply(TextEditor::SnippetEditor *editor) const
     const TextEditor::FontSettings &fs = TextEditor::TextEditorSettings::instance()->fontSettings();
     highlighter->setFormats(fs.toTextCharFormats(QmlJSTextEditor::highlighterFormatCategories()));
     editor->installSyntaxHighlighter(highlighter);
-
     editor->setIndenter(new Indenter);
+    editor->setAutoCompleter(new AutoCompleter);
 }