diff --git a/modules/ve-math/ve.ui.MWMathDialog.css b/modules/ve-math/ve.ui.MWMathDialog.css
index 139d0e2..8cb23b4 100644
--- a/modules/ve-math/ve.ui.MWMathDialog.css
+++ b/modules/ve-math/ve.ui.MWMathDialog.css
@@ -26,6 +26,14 @@
 	overflow: auto;
 }
 
+.ve-ui-mwMathDialog-menuLayout-short .oo-ui-menuLayout-menu {
+	height: 10em;
+}
+
+.ve-ui-mwMathDialog-menuLayout-short .oo-ui-menuLayout-content {
+	bottom: 10em;
+}
+
 .ve-ui-mwMathPage-symbol {
 	background-position: center;
 	background-repeat: no-repeat;
@@ -71,6 +79,11 @@
 	height: 10em;
 }
 
+.ve-ui-mwMathDialog-menuLayout-short .ve-ui-mwMathDialog-preview {
+	line-height: 6em;
+	height: 6em;
+}
+
 /* Ensures the preview image is vertically centred */
 .ve-ui-mwMathDialog-preview .mwe-math-fallback-image-display {
 	display: inline-block;
diff --git a/modules/ve-math/ve.ui.MWMathDialog.js b/modules/ve-math/ve.ui.MWMathDialog.js
index 3f96aa7..a2fc701 100644
--- a/modules/ve-math/ve.ui.MWMathDialog.js
+++ b/modules/ve-math/ve.ui.MWMathDialog.js
@@ -276,14 +276,23 @@ ve.ui.MWMathDialog.prototype.getBodyHeight = function () {
 ve.ui.MWMathDialog.prototype.onWindowManagerResize = function () {
 	var dialog = this;
 	this.input.loadingPromise.done( function () {
-		// Wait for the window resize transition to finish
+		var availableSpace, maxInputHeight, singleLineHeight, minRows,
+			border = 1,
+			padding = 3,
+			borderAndPadding = 2 * ( border + padding );
+
+		// Toggle short mode as necessary
+		// NB a change of mode triggers a transition...
+		dialog.menuLayout.$element.toggleClass(
+			've-ui-mwMathDialog-menuLayout-short', dialog.menuLayout.$element.height() < 450
+		);
+
+		// ...So wait for the possible menuLayout transition to finish
 		setTimeout( function () {
-			var availableSpace, maxInputHeight, singleLineHeight, minRows,
-				border = 1,
-				padding = 3;
+			// Give the input the right number of rows to fit the space
 			availableSpace = dialog.menuLayout.$content.height() - dialog.input.$element.position().top;
 			singleLineHeight = 19;
-			maxInputHeight = availableSpace - 2 * ( border + padding );
+			maxInputHeight = availableSpace - borderAndPadding;
 			minRows = Math.floor( maxInputHeight / singleLineHeight );
 			dialog.input.setMinRows( minRows );
 		}, 250 );