diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 8f41641..63fd05c 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -119,6 +119,23 @@
     return initialized;
 }
 
+static uint8_t psa_get_drivers_initialized(void)
+{
+    uint8_t initialized;
+
+#if defined(MBEDTLS_THREADING_C)
+    mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex);
+#endif /* defined(MBEDTLS_THREADING_C) */
+
+    initialized = global_data.drivers_initialized;
+
+#if defined(MBEDTLS_THREADING_C)
+    mbedtls_mutex_unlock(&mbedtls_threading_psa_globaldata_mutex);
+#endif /* defined(MBEDTLS_THREADING_C) */
+
+    return initialized;
+}
+
 #define GUARD_MODULE_INITIALIZED        \
     if (psa_get_initialized() == 0)     \
     return PSA_ERROR_BAD_STATE;
@@ -126,14 +143,14 @@
 int psa_can_do_hash(psa_algorithm_t hash_alg)
 {
     (void) hash_alg;
-    return global_data.drivers_initialized;
+    return psa_get_drivers_initialized();
 }
 
 int psa_can_do_cipher(psa_key_type_t key_type, psa_algorithm_t cipher_alg)
 {
     (void) key_type;
     (void) cipher_alg;
-    return global_data.drivers_initialized;
+    return psa_get_drivers_initialized();
 }