diff --git a/src/math/categories/categories.pysty3 b/src/math/categories/categories.pysty3
index c103ab2..87ca607 100644
--- a/src/math/categories/categories.pysty3
+++ b/src/math/categories/categories.pysty3
@@ -8,7 +8,7 @@ __HEADER__(Definitions of categories with automatic indexing)%% Wrapper commands
 
 \NewDocumentCommand{\category}{ m }
   {
-    \operatorname{\textbf{#1}}
+    \operatorname{\textup{\textbf{#1}}}
   }