diff --git a/extra/udfhack/linux/32/lib_postgresqludf_sys/lib_postgresqludf_sys.c b/extra/udfhack/linux/32/lib_postgresqludf_sys/lib_postgresqludf_sys.c
index afb925ef2..73bbac951 100644
--- a/extra/udfhack/linux/32/lib_postgresqludf_sys/lib_postgresqludf_sys.c
+++ b/extra/udfhack/linux/32/lib_postgresqludf_sys/lib_postgresqludf_sys.c
@@ -122,6 +122,8 @@ extern DLLIMPORT Datum sys_eval(PG_FUNCTION_ARGS) {
 	result = (char *)malloc(1);
 	outlen = 0;
 
+    result[0] = (char)0;
+
 	pipe = popen(command, "r");
 
 	while (fgets(line, sizeof(line), pipe) != NULL) {
diff --git a/extra/udfhack/linux/64/lib_postgresqludf_sys/lib_postgresqludf_sys.c b/extra/udfhack/linux/64/lib_postgresqludf_sys/lib_postgresqludf_sys.c
index afb925ef2..73bbac951 100644
--- a/extra/udfhack/linux/64/lib_postgresqludf_sys/lib_postgresqludf_sys.c
+++ b/extra/udfhack/linux/64/lib_postgresqludf_sys/lib_postgresqludf_sys.c
@@ -122,6 +122,8 @@ extern DLLIMPORT Datum sys_eval(PG_FUNCTION_ARGS) {
 	result = (char *)malloc(1);
 	outlen = 0;
 
+    result[0] = (char)0;
+
 	pipe = popen(command, "r");
 
 	while (fgets(line, sizeof(line), pipe) != NULL) {
diff --git a/udf/postgresql/linux/32/8.3/lib_postgresqludf_sys.so b/udf/postgresql/linux/32/8.3/lib_postgresqludf_sys.so
index 30f45fd54..eb20b094e 100755
Binary files a/udf/postgresql/linux/32/8.3/lib_postgresqludf_sys.so and b/udf/postgresql/linux/32/8.3/lib_postgresqludf_sys.so differ
diff --git a/udf/postgresql/linux/32/8.4/lib_postgresqludf_sys.so b/udf/postgresql/linux/32/8.4/lib_postgresqludf_sys.so
index d5c13a404..9e07a823f 100755
Binary files a/udf/postgresql/linux/32/8.4/lib_postgresqludf_sys.so and b/udf/postgresql/linux/32/8.4/lib_postgresqludf_sys.so differ