diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
index ef16fcb21b..ff6f1bd7b5 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -751,7 +751,7 @@ bool StyleComputer::expand_unresolved_values(DOM::Element& element, StringView p
                         continue;
                     }
                     default:
-                        dbgln("FIXME: Unimplement calc() expansion in StyleComputer");
+                        dbgln("FIXME: Unimplemented calc() expansion: {}", calc_value->to_string());
                         break;
                     }
                 }