1 files changed, 1 insertions, 1 deletions

diff --git a/src/property_list_service.c b/src/property_list_service.c
index 8634864..c9a8edf 100644
--- a/src/property_list_service.c
+++ b/src/property_list_service.c
@@ -250,7 +250,7 @@ static property_list_service_error_t internal_plist_receive_timeout(property_lis
                         } else {
                                 /* iOS 4.3+ hack: plist data might contain invalid characters, thus we convert those to spaces */
                                 for (bytes = 0; bytes < pktlen-1; bytes++) {
-                                        if ((content[bytes] < 0x20) && (content[bytes] != 0x09) && (content[bytes] != 0x0a) && (content[bytes] != 0x0d))
+                                        if ((content[bytes] >= 0) && (content[bytes] < 0x20) && (content[bytes] != 0x09) && (content[bytes] != 0x0a) && (content[bytes] != 0x0d))
                                                 content[bytes] = 0x20;
                                 }
                                 plist_from_xml(content, pktlen, plist);