diff --git a/sfcommands/printinfo.c b/sfcommands/printinfo.c
index 60e6947..f5cf925 100644
--- a/sfcommands/printinfo.c
+++ b/sfcommands/printinfo.c
@@ -37,6 +37,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <limits.h>

 static char *copyrightstring (AFfilehandle file);

@@ -147,7 +148,11 @@ static char *copyrightstring (AFfilehandle file)
 	int		i, misccount;

 	misccount = afGetMiscIDs(file, NULL);
-	miscids = (int *) malloc(sizeof (int) * misccount);
+	if(!misccount)
+		return NULL;
+	miscids = (int *) calloc(misccount, sizeof(int));
+	if(!miscids)
+		return NULL;
 	afGetMiscIDs(file, miscids);

 	for (i=0; i<misccount; i++)
@@ -159,13 +164,16 @@ static char *copyrightstring (AFfilehandle file)
 			If this code executes, the miscellaneous chunk is a
 			copyright chunk.
 		*/
-		int datasize = afGetMiscSize(file, miscids[i]);
-		char *data = (char *) malloc(datasize);
+		size_t datasize = afGetMiscSize(file, miscids[i]);
+		if(datasize >= INT_MAX -1 ) {
+			goto error;
+		}
+		char *data = (char *) calloc(datasize + 1, 1);
 		afReadMisc(file, miscids[i], data, datasize);
 		copyright = data;
 		break;
 	}
-
+error:
 	free(miscids);

 	return copyright;