diff --git a/internal/implementation_webassembly/fpdf_text.go b/internal/implementation_webassembly/fpdf_text.go
index b44b397e..adee8809 100644
--- a/internal/implementation_webassembly/fpdf_text.go
+++ b/internal/implementation_webassembly/fpdf_text.go
@@ -1356,7 +1356,7 @@ func (p *PdfiumImplementation) FPDFText_HasUnicodeMapError(request *requests.FPD
 		return nil, err
 	}
 
-	res, err := p.Module.ExportedFunction("FPDFText_IsGenerated").Call(p.Context, *textPageHandle.handle, uint64(request.Index))
+	res, err := p.Module.ExportedFunction("FPDFText_HasUnicodeMapError").Call(p.Context, *textPageHandle.handle, uint64(request.Index))
 	if err != nil {
 		return nil, err
 	}
diff --git a/shared_tests/fpdf_text_experimental.go b/shared_tests/fpdf_text_experimental.go
index d3a899a6..228ed680 100644
--- a/shared_tests/fpdf_text_experimental.go
+++ b/shared_tests/fpdf_text_experimental.go
@@ -1277,7 +1277,7 @@ var _ = Describe("fpdf_text", func() {
 				Expect(err).To(BeNil())
 				Expect(FPDFText_HasUnicodeMapError).To(Equal(&responses.FPDFText_HasUnicodeMapError{
 					Index:              2,
-					HasUnicodeMapError: false, // @todo: this SHOULD be true...
+					HasUnicodeMapError: true,
 				}))
 			})
 		})
diff --git a/shared_tests/testdata/test.pdfwith-text.pdf b/shared_tests/testdata/test.pdfwith-text.pdf
new file mode 100644
index 00000000..84d0f4b5
Binary files /dev/null and b/shared_tests/testdata/test.pdfwith-text.pdf differ