diff --git a/build/lib/stylelint/vscode-known-variables.json b/build/lib/stylelint/vscode-known-variables.json
index af361d22da5..3040277d65e 100644
--- a/build/lib/stylelint/vscode-known-variables.json
+++ b/build/lib/stylelint/vscode-known-variables.json
@@ -1091,6 +1091,7 @@
 		"--vscode-bodyFontSize-small",
 		"--vscode-bodyFontSize-xSmall",
 		"--vscode-codiconFontSize",
+		"--vscode-codiconFontSize-compact",
 		"--vscode-cornerRadius-circle",
 		"--vscode-cornerRadius-large",
 		"--vscode-cornerRadius-medium",
diff --git a/src/vs/platform/theme/common/sizes/baseSizes.ts b/src/vs/platform/theme/common/sizes/baseSizes.ts
index 50333dd367d..d6563dd846a 100644
--- a/src/vs/platform/theme/common/sizes/baseSizes.ts
+++ b/src/vs/platform/theme/common/sizes/baseSizes.ts
@@ -24,6 +24,10 @@ export const codiconFontSize = registerSize('codiconFontSize',
 	sizeForAllThemes(16, 'px'),
 	nls.localize('codiconFontSize', "Base font size for codicons."));
 
+export const codiconFontSizeCompact = registerSize('codiconFontSize.compact',
+	sizeForAllThemes(12, 'px'),
+	nls.localize('codiconFontSizeCompact', "Compact font size for codicons."));
+
 // ------ Corner Radii
 
 export const cornerRadiusMedium = registerSize('cornerRadius.medium',