diff --git a/README.md b/README.md
index aa96b6e..d3c7277 100644
--- a/README.md
+++ b/README.md
@@ -190,7 +190,7 @@ Page Detection Modes:
  p, pdfinfo   Forces the use of PDFInfo
  i, identify  Forces the use of ImageMagick's Identify
 
-Valid Paper Names:
+Valid Paper Names: (case-insensitive)
  A0            A1            A2            A3            A4            
  A4SMALL       A5            A6            A7            A8            
  A9            A10           ISOB0         ISOB1         ISOB2         
diff --git a/pdfScale.sh b/pdfScale.sh
index 0a5f622..32a8b80 100755
--- a/pdfScale.sh
+++ b/pdfScale.sh
@@ -1039,7 +1039,7 @@ Page Detection Modes:
  p, pdfinfo   Forces the use of PDFInfo
  i, identify  Forces the use of ImageMagick's Identify
 
-Valid Paper Names:
+Valid Paper Names: (case-insensitive)
 $paperList
 
 Custom Paper Size: