diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 462597b..a2dc841 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -3265,6 +3265,10 @@
     # Check that p256m was built
     grep -q p256_ecdsa_ library/libmbedcrypto.a
 
+    # In "config-tfm.h" we disabled CIPHER_C tweaking TF-M's configuration
+    # files, so we want to ensure that it has not be re-enabled accidentally.
+    not grep mbedtls_cipher library/cipher.o
+
     # Run the tests
     msg "test: TF-M config + p256m driver + accel ECDH(E)/ECDSA"
     make test
@@ -3286,6 +3290,10 @@
     # Check that p256m was not built
     not grep p256_ecdsa_ library/libmbedcrypto.a
 
+    # In "config-tfm.h" we disabled CIPHER_C tweaking TF-M's configuration
+    # files, so we want to ensure that it has not be re-enabled accidentally.
+    not grep mbedtls_cipher library/cipher.o
+
     msg "test: TF-M config"
     make test
 }