diff --git a/src/_icons/math-x-minus-x.svg b/src/_icons/math-x-minus-x.svg
index 75b11ae2c..53b4b4f20 100644
--- a/src/_icons/math-x-minus-x.svg
+++ b/src/_icons/math-x-minus-x.svg
@@ -1,4 +1,5 @@
 ---
+category: Math
 ---
 <svg>
   <path d="M2 9l6 6" />
diff --git a/src/_icons/math-x-plus-x.svg b/src/_icons/math-x-plus-x.svg
index df46f4ff9..16feabe87 100644
--- a/src/_icons/math-x-plus-x.svg
+++ b/src/_icons/math-x-plus-x.svg
@@ -1,4 +1,5 @@
 ---
+category: Math
 ---
 <svg>
   <path d="M2 9l6 6" />
diff --git a/src/_icons/math-y-minus-y.svg b/src/_icons/math-y-minus-y.svg
index 32cd4406e..6e0f583df 100644
--- a/src/_icons/math-y-minus-y.svg
+++ b/src/_icons/math-y-minus-y.svg
@@ -1,4 +1,5 @@
 ---
+category: Math
 ---
 <svg>
   <path d="M2 9l3 5.063" />
diff --git a/src/_icons/math-y-plus-y.svg b/src/_icons/math-y-plus-y.svg
index c503898c2..461c3771d 100644
--- a/src/_icons/math-y-plus-y.svg
+++ b/src/_icons/math-y-plus-y.svg
@@ -1,4 +1,5 @@
 ---
+category: Math
 ---
 <svg>
   <path d="M2 9l3 5.063" />