diff --git a/src/add-ons/print/transports/ipp/IppSetupDlg.cpp b/src/add-ons/print/transports/ipp/IppSetupDlg.cpp
index fb0046a9e9..5285fe3a96 100644
--- a/src/add-ons/print/transports/ipp/IppSetupDlg.cpp
+++ b/src/add-ons/print/transports/ipp/IppSetupDlg.cpp
@@ -121,10 +121,12 @@ bool IppSetupView::UpdateViewData()
 		HTTP_RESPONSECODE response_code = conn.getResponseCode();
 		if (response_code == HTTP_OK) {
 			const char *content_type = conn.getContentType();
-			if (content_type && !strncasecmp(content_type, "application/ipp", 15)) {
+			if (content_type == NULL
+				|| strncasecmp(content_type, "application/ipp", 15) == 0) {
 				const IppContent *ipp_response = conn.getIppResponse();
 				if (ipp_response->good()) {
-					dir->WriteAttr(IPP_URL, B_STRING_TYPE, 0, url->Text(), strlen(url->Text()) + 1);
+					dir->WriteAttr(IPP_URL, B_STRING_TYPE, 0, url->Text(),
+						strlen(url->Text()) + 1);
 					return true;
 				} else {
 					error_msg = ipp_response->getStatusMessage();
diff --git a/src/add-ons/print/transports/ipp/IppTransport.cpp b/src/add-ons/print/transports/ipp/IppTransport.cpp
index 53494c29ad..a70638734a 100644
--- a/src/add-ons/print/transports/ipp/IppTransport.cpp
+++ b/src/add-ons/print/transports/ipp/IppTransport.cpp
@@ -107,7 +107,7 @@ IppTransport::~IppTransport()
 		HTTP_RESPONSECODE response_code = conn.getResponseCode();
 		if (response_code == HTTP_OK) {
 			const char *content_type = conn.getContentType();
-			if (content_type && !strncasecmp(content_type, "application/ipp", 15)) {
+			if (content_type == NULL || strncasecmp(content_type, "application/ipp", 15) == 0) {
 				const IppContent *ipp_response = conn.getIppResponse();
 				if (ipp_response->fail()) {
 					__error = true;