diff --git a/doc/geos.sgml b/doc/geos.sgml
index 0508fe08f..67ee5ccf0 100644
--- a/doc/geos.sgml
+++ b/doc/geos.sgml
@@ -340,7 +340,7 @@ See <tt/ggraph.h/ for list of tokens that you can also place in the string - lik
 
 <sect3>PutDecimal
 <p>
-<tt/void PutDecimal (char parameter, int value, char y, unsigned x)/
+<tt/void PutDecimal (char parameter, unsigned value, char y, unsigned x)/
 <p>
 This function converts <tt/value/ to its decimal representation and outputs it to the screen.
 The <tt/parameter/ is the field width in pixels (range 1-31) and mode bits. Depending on them
diff --git a/include/geos/ggraph.h b/include/geos/ggraph.h
index bd7e5f3e2..70c7006b0 100644
--- a/include/geos/ggraph.h
+++ b/include/geos/ggraph.h
@@ -37,7 +37,7 @@ char __fastcall__ TestPoint(struct pixel *myPixel);
 
 void __fastcall__ PutChar(char character, char y, unsigned x);
 void __fastcall__ PutString(char *myString, char y, unsigned x);
-void __fastcall__ PutDecimal(char style, int value, char y, unsigned x);
+void __fastcall__ PutDecimal(char style, unsigned value, char y, unsigned x);
 
 char __fastcall__ GetCharWidth(char character);
 void __fastcall__ LoadCharSet(struct fontdesc *myFont);
diff --git a/libsrc/geos/graph/putdecimal.s b/libsrc/geos/graph/putdecimal.s
index 77e0ed2ed..587219a25 100644
--- a/libsrc/geos/graph/putdecimal.s
+++ b/libsrc/geos/graph/putdecimal.s
@@ -1,10 +1,10 @@
 
 ;
-; Maciej 'YTM/Alliance' Witkowiak
+; Maciej 'YTM/Elysium' Witkowiak
 ;
-; 30.10.99
+; 30.10.99, 17.8.2003
 
-; void PutDecimal         (char style, int value, char y, int x);
+; void PutDecimal         (char style, unsigned value, char y, int x);
 
 	    .import popa, popax
 	    .import getintcharint