diff --git a/lib/type1/objects.h b/lib/type1/objects.h
index 13cbae7..8ca37cc 100644
--- a/lib/type1/objects.h
+++ b/lib/type1/objects.h
@@ -214,7 +214,7 @@ struct xobject {
/*SHARED*/
/* NDW: personally, I want to see status and error messages! */
#define IfTrace0(condition,model) \
- {if (condition) printf(model);}
+ {if (condition) printf("%s",model);}
#define IfTrace1(condition,model,arg0) \
{if (condition) printf(model,arg0);}
#define IfTrace2(condition,model,arg0,arg1) \
diff --git a/lib/t1lib/t1subset.c b/lib/t1lib/t1subset.c
index da427b2..e76974f 100644
--- a/lib/t1lib/t1subset.c
+++ b/lib/t1lib/t1subset.c
@@ -759,7 +759,7 @@ char *T1_SubsetFont( int FontID,
tr_len);
T1_PrintLog( "T1_SubsetFont()", err_warn_msg_buf,
T1LOG_DEBUG);
- l+=sprintf( &(trailerbuf[l]), linebuf); /* contains the PostScript trailer */
+ l+=sprintf( &(trailerbuf[l]), "%s", linebuf); /* contains the PostScript trailer */
}
/* compute size of output file */