1 files changed, 1 insertions, 1 deletions
diff --git a/fpdf.go b/fpdf.go
index 5fd3f63..5beb694 100644
--- a/fpdf.go
+++ b/fpdf.go
@@ -1302,7 +1302,7 @@ func (f *Fpdf) AddFontFromReader(familyStr, styleStr string, r io.Reader) {
 		n := -1
 		for j, str := range f.diffs {
 			if str == info.Diff {
-				n = j
+				n = j + 1
 				break
 			}
 		}