diff --git a/tests/scripts/components-configuration-crypto.sh b/tests/scripts/components-configuration-crypto.sh
index 1d144e0..b7cef0d 100644
--- a/tests/scripts/components-configuration-crypto.sh
+++ b/tests/scripts/components-configuration-crypto.sh
@@ -413,16 +413,7 @@
     msg "build: configs/config-symmetric-only.h"
     MBEDTLS_CONFIG="configs/config-symmetric-only.h"
     CRYPTO_CONFIG="configs/crypto-config-symmetric-only.h"
-    # test-ref-configs works by overwriting mbedtls_config.h; this makes cmake
-    # want to re-generate generated files that depend on it, quite correctly.
-    # However this doesn't work as the generation script expects a specific
-    # format for mbedtls_config.h, which the other files don't follow. Also,
-    # cmake can't know this, but re-generation is actually not necessary as
-    # the generated files only depend on the list of available options, not
-    # whether they're on or off. So, disable cmake's (over-sensitive here)
-    # dependency resolution for generated files and just rely on them being
-    # present (thanks to pre_generate_files) by turning GEN_FILES off.
-    CC=$ASAN_CC cmake -D GEN_FILES=Off -DMBEDTLS_CONFIG_FILE="$MBEDTLS_CONFIG" -DTF_PSA_CRYPTO_CONFIG_FILE="$CRYPTO_CONFIG" -D CMAKE_BUILD_TYPE:String=Asan .
+    CC=$ASAN_CC cmake -DMBEDTLS_CONFIG_FILE="$MBEDTLS_CONFIG" -DTF_PSA_CRYPTO_CONFIG_FILE="$CRYPTO_CONFIG" -D CMAKE_BUILD_TYPE:String=Asan .
     make
 
     msg "test: configs/config-symmetric-only.h - unit tests"