diff --git a/.gitmodules b/.gitmodules
index ee2516b..40f0bdd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,3 @@
 [submodule "modules/catch2"]
 	path = modules/catch2
 	url = https://github.com/catchorg/Catch2.git
-[submodule "modules/ProcessorTests"]
-	path = modules/ProcessorTests
-	url = https://github.com/TomHarte/ProcessorTests.git
diff --git a/modules/ProcessorTests b/modules/ProcessorTests
deleted file mode 160000
index ab0c825..0000000
--- a/modules/ProcessorTests
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ab0c825e677466e5fc67bb7a00b22d64cf59a691