diff --git a/library/lmots.c b/library/lmots.c
index 1e27024779..8ffadb89e0 100644
--- a/library/lmots.c
+++ b/library/lmots.c
@@ -395,7 +395,7 @@ int mbedtls_lms_error_from_psa( psa_status_t status )
 
 void mbedtls_lmots_public_init( mbedtls_lmots_public_t *ctx )
 {
-    mbedtls_platform_zeroize( ctx, sizeof( *ctx ) ) ;
+    memset( ctx, 0, sizeof( *ctx ) ) ;
 }
 
 void mbedtls_lmots_public_free( mbedtls_lmots_public_t *ctx )
@@ -581,7 +581,7 @@ int mbedtls_lmots_verify( const mbedtls_lmots_public_t *ctx,
 
 void mbedtls_lmots_private_init( mbedtls_lmots_private_t *ctx )
 {
-    mbedtls_platform_zeroize( ctx, sizeof( *ctx ) ) ;
+    memset( ctx, 0, sizeof( *ctx ) ) ;
 }
 
 void mbedtls_lmots_private_free( mbedtls_lmots_private_t *ctx )
diff --git a/library/lms.c b/library/lms.c
index b460353a67..c115dac9d4 100644
--- a/library/lms.c
+++ b/library/lms.c
@@ -221,7 +221,7 @@ exit:
 
 void mbedtls_lms_public_init( mbedtls_lms_public_t *ctx )
 {
-    mbedtls_platform_zeroize( ctx, sizeof( *ctx ) ) ;
+    memset( ctx, 0, sizeof( *ctx ) ) ;
 }
 
 void mbedtls_lms_public_free( mbedtls_lms_public_t *ctx )
@@ -526,7 +526,7 @@ static int get_merkle_path( mbedtls_lms_private_t *ctx,
 
 void mbedtls_lms_private_init( mbedtls_lms_private_t *ctx )
 {
-    mbedtls_platform_zeroize( ctx, sizeof( *ctx ) ) ;
+    memset( ctx, 0, sizeof( *ctx ) ) ;
 }
 
 void mbedtls_lms_private_free( mbedtls_lms_private_t *ctx )