diff --git a/CMakeLists.txt b/CMakeLists.txt
index 697b196..b1af566 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -362,20 +362,6 @@
         )
         add_custom_target(test_certs_header DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/tests/src/test_certs.h)
         add_dependencies(mbedtls_test test_keys_header test_certs_header)
-
-        add_custom_command(
-            OUTPUT
-                ${CMAKE_CURRENT_SOURCE_DIR}/tests/opt-testcases/tls13-compat.sh
-            WORKING_DIRECTORY
-                ${CMAKE_CURRENT_SOURCE_DIR}
-            COMMAND
-                "${MBEDTLS_PYTHON_EXECUTABLE}"
-                "${CMAKE_CURRENT_SOURCE_DIR}/tests/scripts/generate_tls13_compat_tests.py"
-            DEPENDS
-                ${CMAKE_CURRENT_SOURCE_DIR}/framework/scripts/generate_test_keys.py
-        )
-        add_custom_target(tls13-compat.sh
-            DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/tests/opt-testcases/tls13-compat.sh)
     endif()
     target_include_directories(mbedtls_test
         PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tests/include
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index d1338ea..854ef19 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -64,6 +64,20 @@
             # change too often in ways that don't affect the result
             # ((un)commenting some options).
     )
+    add_custom_command(
+        OUTPUT
+            ${CMAKE_CURRENT_SOURCE_DIR}/opt-testcases/tls13-compat.sh
+        WORKING_DIRECTORY
+            ${CMAKE_CURRENT_SOURCE_DIR}/..
+        COMMAND
+            "${MBEDTLS_PYTHON_EXECUTABLE}"
+            "${CMAKE_CURRENT_SOURCE_DIR}/scripts/generate_tls13_compat_tests.py"
+        DEPENDS
+            ${CMAKE_CURRENT_SOURCE_DIR}/../framework/scripts/generate_test_keys.py
+    )
+    add_custom_target(tls13-compat.sh
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/opt-testcases/tls13-compat.sh)
+
 else()
     foreach(file ${all_generated_data_files})
         link_to_source(${file})