diff --git a/library/pk.c b/library/pk.c
index d1bd2158b9..a1c7c1d2e0 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -108,6 +108,7 @@ int pk_init_ctx( pk_context *ctx, const pk_info_t *info )
     return( 0 );
 }
 
+#if defined(POLARSSL_RSA_C)
 /*
  * Set RSA padding
  */
@@ -121,6 +122,7 @@ int pk_rsa_set_padding( pk_context *ctx, int padding, int hash_id )
 
     return( 0 );
 }
+#endif /* POLARSSL_RSA_C */
 
 /*
  * Initialize an RSA-alt context
diff --git a/tests/suites/test_suite_pk.data b/tests/suites/test_suite_pk.data
index e7a52afb52..3821bae79f 100644
--- a/tests/suites/test_suite_pk.data
+++ b/tests/suites/test_suite_pk.data
@@ -15,7 +15,6 @@ depends_on:POLARSSL_ECDSA_C:POLARSSL_ECP_DP_SECP192R1_ENABLED
 pk_utils:POLARSSL_PK_ECDSA:192:24:"ECDSA"
 
 PK RSA padding: RSA (ok)
-depends_on:POLARSSL_RSA_C
 pk_set_rsa_padding:POLARSSL_PK_RSA:RSA_PKCS_V21:POLARSSL_MD_SHA512:0
 
 PK RSA padding: ECKEY (error)
diff --git a/tests/suites/test_suite_pk.function b/tests/suites/test_suite_pk.function
index 268721e7b6..5cdb1c817b 100644
--- a/tests/suites/test_suite_pk.function
+++ b/tests/suites/test_suite_pk.function
@@ -54,7 +54,7 @@ void pk_utils( int type, int size, int len, char *name )
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:POLARSSL_RSA_C */
 void pk_set_rsa_padding( int type, int padding, int hash_id, int ret )
 {
     pk_context pk;