diff --git a/phpBB/adm/style/admin.css b/phpBB/adm/style/admin.css
index ccf6a0f51a..75c98b05e0 100644
--- a/phpBB/adm/style/admin.css
+++ b/phpBB/adm/style/admin.css
@@ -1707,7 +1707,7 @@ fieldset.submit-buttons legend {
 	flex-shrink: 0;
 	justify-content: center;
 	align-items: center;
-	margin-right: 16px;
+	margin-right: 8px;
 	margin-left: 0;
 }
 
@@ -1737,7 +1737,7 @@ svg { /* TODO: remove it after general normalization */
 	overflow: hidden;
 	justify-content: flex-start;
 	align-items: center;
-	padding: 16px;
+	padding: 8px;
 	cursor: pointer;
 }
 
diff --git a/phpBB/styles/prosilver/theme/mentions.css b/phpBB/styles/prosilver/theme/mentions.css
index e7f17bc03c..83f177083e 100644
--- a/phpBB/styles/prosilver/theme/mentions.css
+++ b/phpBB/styles/prosilver/theme/mentions.css
@@ -34,7 +34,7 @@
 	flex-shrink: 0;
 	justify-content: center;
 	align-items: center;
-	margin-right: 16px;
+	margin-right: 8px;
 	margin-left: 0;
 }
 
@@ -58,7 +58,7 @@ svg { /* TODO: remove it after general normalization */
 	overflow: hidden;
 	justify-content: flex-start;
 	align-items: center;
-	padding: 16px;
+	padding: 8px;
 	cursor: pointer;
 }