diff --git a/.gitmodules b/.gitmodules
index 99b7c287..26d7a332 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -100,9 +100,6 @@
 [submodule ".ci"]
 	path = .ci
 	url = https://github.com/epics-base/ci-scripts
-[submodule "modules/motorSM300"]
-	path = modules/motorSM300
-	url = https://github.com/ISISComputingGroup/motorSM300.git
 [submodule "modules/motorLinMot"]
 	path = modules/motorLinMot
 	url = https://github.com/ISISComputingGroup/motorLinMot.git
diff --git a/modules/Makefile b/modules/Makefile
index 7093f1b8..d1246791 100644
--- a/modules/Makefile
+++ b/modules/Makefile
@@ -43,7 +43,6 @@ SUBMODULES += motorSmartMotor
 SUBMODULES += motorThorLabs
 
 ## isis facility extras
-SUBMODULES += motorSM300
 SUBMODULES += motorLinMot
 
 # Allow sites to add extra submodules