diff --git a/Makefile.am b/Makefile.am
index aee2d84..b0cb065 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -250,6 +250,23 @@ BUILT_SOURCES += \
 EXTRA_DIST += \
 	t/issue251/issue251.proto
 
+# Issue #330
+check_PROGRAMS += \
+	t/issue330/issue330
+TESTS += \
+	t/issue330/issue330
+t_issue330_issue330_SOURCES = \
+	t/issue330/issue330.c \
+	t/issue330/issue330.pb-c.c
+t_issue330_issue330_LDADD = \
+	protobuf-c/libprotobuf-c.la
+t/issue330/issue330.pb-c.c t/issue330/issue330.pb-c.h: $(top_builddir)/protoc-c/protoc-gen-c$(EXEEXT) $(top_srcdir)/t/issue330/issue330.proto
+	$(AM_V_GEN)@PROTOC@ --plugin=protoc-gen-c=$(top_builddir)/protoc-c/protoc-gen-c$(EXEEXT) -I$(top_srcdir) --c_out=$(top_builddir) $(top_srcdir)/t/issue330/issue330.proto
+BUILT_SOURCES += \
+	t/issue330/issue330.pb-c.c t/issue330/issue330.pb-c.h
+EXTRA_DIST += \
+	t/issue330/issue330.proto
+
 # Issue #375
 check_PROGRAMS += \
 	t/issue375/issue375
diff --git a/protoc-c/c_field.cc b/protoc-c/c_field.cc
index eaa38d2..bf11def 100644
--- a/protoc-c/c_field.cc
+++ b/protoc-c/c_field.cc
@@ -140,8 +140,14 @@ void FieldGenerator::GenerateDescriptorInitializerGeneric(io::Printer* printer,
 
   if (descriptor_->label() == FieldDescriptor::LABEL_REPEATED
    && is_packable_type (descriptor_->type())
-   && descriptor_->options().packed())
+   && descriptor_->options().packed()) {
     variables["flags"] += " | PROTOBUF_C_FIELD_FLAG_PACKED";
+  } else if (descriptor_->label() == FieldDescriptor::LABEL_REPEATED
+   && is_packable_type (descriptor_->type())
+   && FieldSyntax(descriptor_) == 3
+   && !descriptor_->options().has_packed()) {
+    variables["flags"] += " | PROTOBUF_C_FIELD_FLAG_PACKED";
+  }
 
   if (descriptor_->options().deprecated())
     variables["flags"] += " | PROTOBUF_C_FIELD_FLAG_DEPRECATED";
diff --git a/t/issue330/.gitignore b/t/issue330/.gitignore
new file mode 100644
index 0000000..e8625da
--- /dev/null
+++ b/t/issue330/.gitignore
@@ -0,0 +1 @@
+issue330
diff --git a/t/issue330/issue330.c b/t/issue330/issue330.c
new file mode 100644
index 0000000..294125d
--- /dev/null
+++ b/t/issue330/issue330.c
@@ -0,0 +1,25 @@
+#include <stdlib.h>
+#include <string.h>
+
+#include "t/issue330/issue330.pb-c.h"
+
+int main(void)
+{
+	/* Output of $ echo acl_id: 2 acl_id: 3 | protoc issue330.proto \
+	 * --encode=pbr_route | xxd -i:  0x52, 0x02, 0x02, 0x03 
+	 */
+	uint8_t protoc[] = {0x52, 0x02, 0x02, 0x03};
+	PbrRoute msg = PBR_ROUTE__INIT;
+	int ids[] = {2, 3};
+	uint8_t buf[16] = {0};
+	size_t sz = 0;
+
+	msg.n_acl_id = 2;
+	msg.acl_id = ids;
+	sz = pbr_route__pack(&msg, buf);
+
+	assert (sz == sizeof protoc);
+	assert (memcmp (protoc, buf, sz) == 0);
+
+	return EXIT_SUCCESS;
+}
diff --git a/t/issue330/issue330.proto b/t/issue330/issue330.proto
new file mode 100644
index 0000000..c1e221e
--- /dev/null
+++ b/t/issue330/issue330.proto
@@ -0,0 +1,5 @@
+syntax = "proto3";
+
+message pbr_route {
+repeated int32 acl_id = 10;
+}