diff --git a/99-solo.rules b/99-solo.rules
index ce8cc8a..0c6450a 100644
--- a/99-solo.rules
+++ b/99-solo.rules
@@ -1,3 +1,12 @@
+# Notify ModemManager this device should be ignored
+ACTION!="add|change|move", GOTO="mm_usb_device_blacklist_end"
+SUBSYSTEM!="usb", GOTO="mm_usb_device_blacklist_end"
+ENV{DEVTYPE}!="usb_device",  GOTO="mm_usb_device_blacklist_end"
+
+ATTRS{idVendor}=="0483", ATTRS{idProduct}=="a2ca", ENV{ID_MM_DEVICE_IGNORE}="1"
+
+LABEL="mm_usb_device_blacklist_end"
+
 # Solo
 ATTRS{idVendor}=="0483", ATTRS{idProduct}=="a2ca", ATTRS{product}=="Solo",                   TAG+="uaccess", GROUP="plugdev", SYMLINK+="solokey"
 ATTRS{idVendor}=="0483", ATTRS{idProduct}=="a2ca", ATTRS{product}=="Solo HACKER (Unlocked)", TAG+="uaccess", GROUP="plugdev", SYMLINK+="solohacker"