diff --git a/CMakeLists.txt b/CMakeLists.txt
index 37ef3631e..5cb1ca7f0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,14 +24,14 @@ if (ENABLE_WASM)
   set(CMAKE_EXECUTABLE_SUFFIX ".js")
 endif (ENABLE_WASM)
 
-message ("-- Looking for libshared")
-if (EXISTS ${CMAKE_SOURCE_DIR}/src/libshared/src)
-  message ("-- Found libshared")
+message ("-- Looking for git submodules")
+if (EXISTS ${CMAKE_SOURCE_DIR}/src/libshared/src AND EXISTS ${CMAKE_SOURCE_DIR}/src/tc/corrosion)
+  message ("-- Found git submodules")
 else (EXISTS ${CMAKE_SOURCE_DIR}/src/libshared/src)
-  message ("-- Cloning libshared")
+  message ("-- Cloning git submodules")
   execute_process (COMMAND git submodule update --init
                    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
-endif (EXISTS ${CMAKE_SOURCE_DIR}/src/libshared/src)
+endif (EXISTS ${CMAKE_SOURCE_DIR}/src/libshared/src AND EXISTS ${CMAKE_SOURCE_DIR}/src/tc/corrosion)
 
 message ("-- Looking for SHA1 references")
 if (EXISTS ${CMAKE_SOURCE_DIR}/.git/index)