Index: src/view/kateviewinternal.h
===================================================================
--- src/view/kateviewinternal.h
+++ src/view/kateviewinternal.h
@@ -54,6 +54,7 @@
 class KateTextLayout;
 class KateTextAnimation;
 class KateAbstractInputMode;
+class WheelEventFilter;
 
 class QScrollBar;
 
@@ -286,6 +287,8 @@
     int m_scrollX;
     int m_scrollY;
 
+    WheelEventFilter *m_wheelEventFilter;
+
     Qt::CursorShape m_mouseCursor;
 
     Kate::TextCursor m_cursor;
Index: src/view/kateviewinternal.cpp
===================================================================
--- src/view/kateviewinternal.cpp
+++ src/view/kateviewinternal.cpp
@@ -63,6 +63,61 @@
 
 static const bool debugPainting = false;
 
+class WheelEventFilter
+{
+public:
+    WheelEventFilter(KateViewInternal *vi)
+        : m_vi(vi)
+        , m_accidentalModifier(false)
+        , m_lastWheelEventUnmodified(false)
+    {
+    }
+
+    bool detectZoomingEvent(QWheelEvent *e, bool unsetModifier=true, Qt::KeyboardModifiers modifier=Qt::ControlModifier)
+    {
+        bool skip = false;
+        const qint64 deltaT = m_lastWheelEvent.elapsed();
+        Qt::KeyboardModifiers modState = e->modifiers();
+        if (modState == modifier) {
+            // Pressing the Control/Command key within 200ms of the previous "unmodified" wheelevent
+            // is not allowed to toggle on text zooming
+            if (m_lastWheelEventUnmodified && deltaT < 200) {
+                    m_accidentalModifier = true;
+            }
+            else {
+                // hold the Control/Command key for 1s without scrolling to re-allow text zooming
+                if (deltaT > 1000) {
+                    m_accidentalModifier = false;
+                }
+            }
+            m_lastWheelEventUnmodified = false;
+            if (m_accidentalModifier) {
+                //qCWarning(LOG_KTE) << "skipping because of accidental keypress; dT=" << deltaT;
+                skip = true;
+                if (unsetModifier) {
+                    // unset the ControlModifier so the view scrollbars can handle the scroll
+                    // event and produce normal, not accelerated scrolling
+                    modState &= ~Qt::ControlModifier;
+                    e->setModifiers(modState);
+                }
+            }
+        } else {
+            m_lastWheelEventUnmodified = true;
+            m_accidentalModifier = false;
+        }
+        m_lastWheelEvent.start();
+
+        // ctrl pressed -> change font size (only if angle is reported and not accidentally so)
+        return !skip && modState == modifier;
+    }
+
+protected:
+    KateViewInternal *m_vi;
+    QElapsedTimer m_lastWheelEvent;
+    bool m_accidentalModifier;
+    bool m_lastWheelEventUnmodified;
+};
+
 KateViewInternal::KateViewInternal(KTextEditor::ViewPrivate *view)
     : QWidget(view)
     , editSessionNumber(0)
@@ -187,6 +242,7 @@
 
     setAcceptDrops(true);
 
+    m_wheelEventFilter = new WheelEventFilter(this);
     // event filter
     installEventFilter(this);
 
@@ -245,6 +301,8 @@
     delete m_bm;
     delete m_bmStart;
     delete m_bmEnd;
+
+    delete m_wheelEventFilter;
 }
 
 void KateViewInternal::prepareForDynWrapChange()
@@ -3295,8 +3353,9 @@
 
 void KateViewInternal::wheelEvent(QWheelEvent *e)
 {
-    // ctrl pressed -> change font size (only if angle is reported)
-    if (e->modifiers() == Qt::ControlModifier) {
+    // check if this event should change the font size (Ctrl pressed, angle reported and not accidentally so)
+    // Note: if detectZoomingEvent() doesn't unset the ControlModifier we'll get accelerated scrolling.
+    if (m_wheelEventFilter->detectZoomingEvent(e)) {
         if (e->angleDelta().y() > 0) {
             slotIncFontSizes();
         } else if (e->angleDelta().y() < 0) {