diff --git a/browser/themes/gnomestripe/preferences/preferences.css b/browser/themes/gnomestripe/preferences/preferences.css
index 3a19fbb185c..37c045c8324 100644
--- a/browser/themes/gnomestripe/preferences/preferences.css
+++ b/browser/themes/gnomestripe/preferences/preferences.css
@@ -181,8 +181,4 @@ radio[pane=paneSync] {
   margin-bottom: 1em;
 }
 
-#syncEnginesList {
-  height: 10em;
-}
-
 %endif
diff --git a/browser/themes/pinstripe/preferences/preferences.css b/browser/themes/pinstripe/preferences/preferences.css
index 9f6da01fdd9..40406e41a5a 100644
--- a/browser/themes/pinstripe/preferences/preferences.css
+++ b/browser/themes/pinstripe/preferences/preferences.css
@@ -239,8 +239,4 @@ caption {
   margin-bottom: 1em;
 }
 
-#syncEnginesList {
-  height: 10em;
-}
-
 %endif
diff --git a/browser/themes/winstripe/preferences/preferences.css b/browser/themes/winstripe/preferences/preferences.css
index d36cb7c2857..ed9fe267194 100644
--- a/browser/themes/winstripe/preferences/preferences.css
+++ b/browser/themes/winstripe/preferences/preferences.css
@@ -169,10 +169,6 @@ radio[pane=paneSync] {
 #syncAddDeviceLabel {
   margin-top: 1em;
   margin-bottom: 1em;
- }
-
-#syncEnginesList {
-  height: 11em;
 }
 
 %endif