diff --git a/skeletons/BIT_STRING.c b/skeletons/BIT_STRING.c
index e21594a5..8c83d689 100644
--- a/skeletons/BIT_STRING.c
+++ b/skeletons/BIT_STRING.c
@@ -124,6 +124,8 @@ BIT_STRING_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
 
 	if(!xcan) _i_ASN_TEXT_INDENT(1, ilevel - 1);
 
+	er.structure_ptr = 0;
+	er.failed_type = 0;
 	return er;
 cb_failed:
 	_ASN_ENCODE_FAILED;
diff --git a/skeletons/INTEGER.c b/skeletons/INTEGER.c
index b4770560..d2a66b5d 100644
--- a/skeletons/INTEGER.c
+++ b/skeletons/INTEGER.c
@@ -430,6 +430,8 @@ INTEGER_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
 	er.encoded = INTEGER__dump(td, st, cb, app_key, 1);
 	if(er.encoded < 0) _ASN_ENCODE_FAILED;
 
+	er.structure_ptr = 0;
+	er.failed_type = 0;
 	return er;
 }
 
diff --git a/skeletons/OCTET_STRING.c b/skeletons/OCTET_STRING.c
index de53c1db..447b2425 100644
--- a/skeletons/OCTET_STRING.c
+++ b/skeletons/OCTET_STRING.c
@@ -639,6 +639,8 @@ OCTET_STRING_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
 		}
 	}
 
+	er.structure_ptr = 0;
+	er.failed_type = 0;
 	return er;
 cb_failed:
 	_ASN_ENCODE_FAILED;
@@ -779,6 +781,8 @@ OCTET_STRING_encode_xer_utf8(asn_TYPE_descriptor_t *td, void *sptr,
 		_ASN_ENCODE_FAILED;
 
 	er.encoded = encoded_len;
+	er.structure_ptr = 0;
+	er.failed_type = 0;
 	return er;
 }
 
diff --git a/skeletons/REAL.c b/skeletons/REAL.c
index 7447aae9..c4801538 100644
--- a/skeletons/REAL.c
+++ b/skeletons/REAL.c
@@ -257,6 +257,8 @@ REAL_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
 	er.encoded = REAL__dump(d, flags & XER_F_CANONICAL, cb, app_key);
 	if(er.encoded < 0) _ASN_ENCODE_FAILED;
 
+	er.structure_ptr = 0;
+	er.failed_type = 0;
 	return er;
 }
 
diff --git a/skeletons/tests/check-GeneralizedTime.c b/skeletons/tests/check-GeneralizedTime.c
index 245e9408..9eabb69f 100644
--- a/skeletons/tests/check-GeneralizedTime.c
+++ b/skeletons/tests/check-GeneralizedTime.c
@@ -267,6 +267,7 @@ OCTET_STRING_encode_der(asn_TYPE_descriptor_t *td, void *ptr, int tag_mode, ber_
 	(void)cb;
 	(void)app_key;
 
+	memset(&erval, 0, sizeof(erval));
 	return erval;
 }
 
@@ -281,5 +282,6 @@ OCTET_STRING_encode_xer_utf8(asn_TYPE_descriptor_t *td, void *ptr, int ilevel, e
 	(void)cb;
 	(void)app_key;
 
+	memset(&erval, 0, sizeof(erval));
 	return erval;
 }
diff --git a/skeletons/tests/check-UTCTime.c b/skeletons/tests/check-UTCTime.c
index 96803ad6..81dde560 100644
--- a/skeletons/tests/check-UTCTime.c
+++ b/skeletons/tests/check-UTCTime.c
@@ -74,6 +74,7 @@ OCTET_STRING_encode_der(asn_TYPE_descriptor_t *td, void *ptr, int tag_mode, ber_
 	(void)cb;
 	(void)app_key;
 
+	memset(&erval, 0, sizeof(erval));
 	return erval;
 }
 
@@ -88,5 +89,6 @@ OCTET_STRING_encode_xer_utf8(asn_TYPE_descriptor_t *td, void *ptr, int ilevel, e
 	(void)cb;
 	(void)app_key;
 
+	memset(&erval, 0, sizeof(erval));
 	return erval;
 }
diff --git a/skeletons/xer_encoder.c b/skeletons/xer_encoder.c
index 5207d28e..3ee62cb8 100644
--- a/skeletons/xer_encoder.c
+++ b/skeletons/xer_encoder.c
@@ -32,6 +32,8 @@ xer_encode(asn_TYPE_descriptor_t *td, void *sptr,
 
 	er.encoded = 4 + xcan + (2 * mlen) + tmper.encoded;
 
+	er.structure_ptr = 0;
+	er.failed_type = 0;
 	return er;
 cb_failed:
 	_ASN_ENCODE_FAILED;