diff --git a/package.json b/package.json
index aa0a926c..72b4d2fa 100644
--- a/package.json
+++ b/package.json
@@ -62,6 +62,7 @@
     "clean": "rm -rf build/* node_modules/",
     "clean-install": "npm run clean && npm i",
     "test": "check-dependencies && npm run lint && npm run flow && npm run jest",
+    "verify-screenshots": "check-dependencies && dockers/Screenshotter/screenshotter.sh --verify",
     "start": "check-dependencies && webpack-dev-server --open --config webpack.dev.js",
     "build": "check-dependencies && rimraf build/* && webpack",
     "watch": "npm run build -- --watch",
diff --git a/src/buildHTML.js b/src/buildHTML.js
index 17845996..9779436f 100644
--- a/src/buildHTML.js
+++ b/src/buildHTML.js
@@ -19,10 +19,6 @@ import {spacings, tightSpacings} from "./spacingData";
 
 const makeSpan = buildCommon.makeSpan;
 
-const isSpace = function(node) {
-    return node instanceof domTree.span && node.classes[0] === "mspace";
-};
-
 // Binary atoms (first class `mbin`) change into ordinary atoms (`mord`)
 // depending on their surroundings. See TeXbook pg. 442-446, Rules 5 and 6,
 // and the text before Rule 19.
@@ -50,23 +46,6 @@ const isBinRightCanceller = function(node, isRealGroup) {
     }
 };
 
-/**
- * Splice out any spaces from `children` starting at position `i`, and return
- * the spliced-out array. Returns null if `children[i]` does not exist or is not
- * a space.
- */
-export const spliceSpaces = function(children, i) {
-    let j = i;
-    while (j < children.length && isSpace(children[j])) {
-        j++;
-    }
-    if (j === i) {
-        return null;
-    } else {
-        return children.splice(i, j - i);
-    }
-};
-
 const styleMap = {
     "display": Style.DISPLAY,
     "text": Style.TEXT,
@@ -149,10 +128,7 @@ export const buildExpression = function(expression, options, isRealGroup) {
                         }
                     }
 
-                    const glue = buildCommon.makeGlue(
-                        spacings[left][right], glueOptions);
-
-                    groups.push(glue);
+                    groups.push(buildCommon.makeGlue(space, glueOptions));
                 }
             }
             j++;
diff --git a/test/screenshotter/images/Spacing-chrome.png b/test/screenshotter/images/Spacing-chrome.png
index 436545b6..5a8cf67e 100644
Binary files a/test/screenshotter/images/Spacing-chrome.png and b/test/screenshotter/images/Spacing-chrome.png differ
diff --git a/test/screenshotter/images/Spacing-firefox.png b/test/screenshotter/images/Spacing-firefox.png
index e5b40cdc..4e3d75b4 100644
Binary files a/test/screenshotter/images/Spacing-firefox.png and b/test/screenshotter/images/Spacing-firefox.png differ
diff --git a/test/screenshotter/ss_data.yaml b/test/screenshotter/ss_data.yaml
index 8a92f12e..2b4b5a1a 100644
--- a/test/screenshotter/ss_data.yaml
+++ b/test/screenshotter/ss_data.yaml
@@ -241,7 +241,12 @@ SizingBaseline:
 Sizing: |
     {\Huge x}{\LARGE y}{\normalsize z}{\scriptsize w}\sqrt[\small 3]{x+1}
 Smash: \left( X^{\smash 2} \right) \sqrt{\smash[b]{y}}
-Spacing: ^3+[-1][1-1]1=1(=1)\lvert a\rvert~b
+Spacing: |
+    \begin{matrix}
+        ^3+[-1][1-1]1=1(=1)\lvert a\rvert~b \\
+        \scriptstyle{^3+[-1][1-1]1=1(=1)\lvert a\rvert~b} \\
+        \scriptscriptstyle{^3+[-1][1-1]1=1(=1)\lvert a\rvert~b} \\
+    \end{matrix}
 Sqrt: |
     \sqrt{\sqrt{\sqrt{x}}}_{\sqrt{\sqrt{x}}}^{\sqrt{\sqrt{\sqrt{x}}}
     ^{\sqrt{\sqrt{\sqrt{x}}}}}