diff --git a/Userland/Libraries/LibPDF/Fonts/Type1FontProgram.cpp b/Userland/Libraries/LibPDF/Fonts/Type1FontProgram.cpp
index cf1902ea48..b777a4a1d6 100644
--- a/Userland/Libraries/LibPDF/Fonts/Type1FontProgram.cpp
+++ b/Userland/Libraries/LibPDF/Fonts/Type1FontProgram.cpp
@@ -500,6 +500,7 @@ PDFErrorOr<Type1FontProgram::Glyph> Type1FontProgram::parse_glyph(ReadonlyBytes
                 case Hflex1:
                 case Flex1:
                     // TODO: implement these
+                    dbgln_if(PDF_DEBUG, "Unimplemented flex: 12 {}", data[i]);
                     state.sp = 0;
                     break;