diff --git a/src/plugins/bearer/connman/CMakeLists.txt b/src/plugins/bearer/connman/CMakeLists.txt
index 00f0c7dccb6..cadd67bbce5 100644
--- a/src/plugins/bearer/connman/CMakeLists.txt
+++ b/src/plugins/bearer/connman/CMakeLists.txt
@@ -6,6 +6,7 @@
 
 add_qt_plugin(qconnmanbearer
     TYPE bearer
+    DEFAULT_IF False # special case QTBUG-78164
     CLASS_NAME QConnmanEnginePlugin
     SOURCES
         ../linux_common/qofonoservice_linux.cpp ../linux_common/qofonoservice_linux_p.h
diff --git a/src/plugins/bearer/networkmanager/CMakeLists.txt b/src/plugins/bearer/networkmanager/CMakeLists.txt
index c615aec243a..245a18b64d4 100644
--- a/src/plugins/bearer/networkmanager/CMakeLists.txt
+++ b/src/plugins/bearer/networkmanager/CMakeLists.txt
@@ -6,6 +6,7 @@
 
 add_qt_plugin(qnmbearer
     TYPE bearer
+    DEFAULT_IF False # special case QTBUG-78164
     CLASS_NAME QNetworkManagerEnginePlugin
     SOURCES
         ../linux_common/qofonoservice_linux.cpp ../linux_common/qofonoservice_linux_p.h