diff --git a/src/security/builtin_plugins/cryptographic/src/crypto_transform.c b/src/security/builtin_plugins/cryptographic/src/crypto_transform.c
index a2f6893..1fd32b9 100644
--- a/src/security/builtin_plugins/cryptographic/src/crypto_transform.c
+++ b/src/security/builtin_plugins/cryptographic/src/crypto_transform.c
@@ -59,7 +59,7 @@ struct crypto_header
 struct crypto_contents
 {
   uint32_t _length;
-  unsigned char _data[1];
+  unsigned char _data[];
 };
 
 struct crypto_contents_ref
@@ -71,7 +71,7 @@ struct crypto_contents_ref
 struct receiver_specific_mac_seq
 {
   uint32_t _length;
-  struct receiver_specific_mac _buffer[1];
+  struct receiver_specific_mac _buffer[];
 };
 
 struct crypto_footer
@@ -83,7 +83,7 @@ struct crypto_footer
 struct encrypted_data
 {
   uint32_t length;
-  unsigned char data[1];
+  unsigned char data[];
 };
 
 /*
diff --git a/src/security/builtin_plugins/tests/encode_datareader_submessage/src/encode_datareader_submessage_utests.c b/src/security/builtin_plugins/tests/encode_datareader_submessage/src/encode_datareader_submessage_utests.c
index 30bacaa..2962aca 100644
--- a/src/security/builtin_plugins/tests/encode_datareader_submessage/src/encode_datareader_submessage_utests.c
+++ b/src/security/builtin_plugins/tests/encode_datareader_submessage/src/encode_datareader_submessage_utests.c
@@ -77,7 +77,7 @@ struct receiver_specific_mac
 struct encrypted_data
 {
   uint32_t length;
-  unsigned char data[1];
+  unsigned char data[];
 };
 
 struct seq_number
diff --git a/src/security/builtin_plugins/tests/encode_datawriter_submessage/src/encode_datawriter_submessage_utests.c b/src/security/builtin_plugins/tests/encode_datawriter_submessage/src/encode_datawriter_submessage_utests.c
index a186641..30a4ce4 100644
--- a/src/security/builtin_plugins/tests/encode_datawriter_submessage/src/encode_datawriter_submessage_utests.c
+++ b/src/security/builtin_plugins/tests/encode_datawriter_submessage/src/encode_datawriter_submessage_utests.c
@@ -83,7 +83,7 @@ struct receiver_specific_mac
 struct encrypted_data
 {
   uint32_t length;
-  unsigned char data[1];
+  unsigned char data[];
 };
 
 static void reset_exception(DDS_Security_SecurityException *ex)