diff --git a/src/link/object.c b/src/link/object.c
index 3585f64e..7c04812c 100644
--- a/src/link/object.c
+++ b/src/link/object.c
@@ -127,6 +127,8 @@ static char *readstr(FILE *file)
 		}
 		/* Read char */
 		str[index] = getc(file);
+		if (str[index] == EOF)
+			return NULL;
 	} while (str[index]);
 	return str;
 }