diff --git a/tests/data/CMakeLists.txt b/tests/data/CMakeLists.txt
index 7274d37668..dfe0fe2f8a 100644
--- a/tests/data/CMakeLists.txt
+++ b/tests/data/CMakeLists.txt
@@ -24,7 +24,3 @@
 # Loads 'TESTCASES' from for the 'make show' target in runtests.pl
 transform_makefile_inc("Makefile.inc" "${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
 include("${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
-
-# Prints all available test cases. Do not quote TESTCASES, it must be displayed
-# as a space-separated string rather than comma-separated (a list in CMake).
-add_custom_target(show COMMAND echo ${TESTCASES})