diff --git a/pimd/pim_igmp.c b/pimd/pim_igmp.c
index 82db37f..a0a4aa8 100644
--- a/pimd/pim_igmp.c
+++ b/pimd/pim_igmp.c
@@ -286,6 +286,7 @@
   struct in_addr        group_addr;
   uint16_t              recv_checksum;
   uint16_t              checksum;
+  int                   i;
 
   group_addr = *(struct in_addr *)(igmp_msg + 4);
 
@@ -419,7 +420,7 @@
 
 	  /* Scan sources in query and lower their timers to LMQT */
 	  struct in_addr *sources = (struct in_addr *)(igmp_msg + IGMP_V3_SOURCES_OFFSET);
-	  for (int i = 0; i < recv_num_sources; ++i) {
+	  for (i = 0; i < recv_num_sources; ++i) {
 	    struct in_addr src_addr = sources[i];
 	    struct igmp_source *src = igmp_find_source_by_addr(group, src_addr);
 	    if (src) {
@@ -451,6 +452,7 @@
   uint8_t          *group_record;
   uint8_t          *report_pastend = (uint8_t *) igmp_msg + igmp_msg_len;
   struct interface *ifp = igmp->interface;
+  int               i;
 
   if (igmp_msg_len < IGMP_V3_MSG_MIN_SIZE) {
     zlog_warn("Recv IGMP report v3 from %s on %s: size=%d shorter than minimum=%d",
@@ -485,7 +487,7 @@
   group_record = (uint8_t *) igmp_msg + IGMP_V3_REPORT_GROUPPRECORD_OFFSET;
 
   /* Scan groups */
-  for (int i = 0; i < num_groups; ++i) {
+  for (i = 0; i < num_groups; ++i) {
     struct in_addr  rec_group;
     uint8_t        *sources;
     uint8_t        *src;
diff --git a/pimd/pim_igmpv3.c b/pimd/pim_igmpv3.c
index 3d3ee7a..7e76f44 100644
--- a/pimd/pim_igmpv3.c
+++ b/pimd/pim_igmpv3.c
@@ -531,6 +531,7 @@
   struct interface *ifp = igmp->interface;
   struct pim_interface *pim_ifp;
   struct igmp_group *group;
+  int    i;
 
   pim_ifp = ifp->info;
 
@@ -541,7 +542,7 @@
   }
 
   /* scan received sources */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;
 
@@ -580,6 +581,8 @@
 static void isex_excl(struct igmp_group *group,
 		      int num_sources, struct in_addr *sources)
 {
+  int     i;
+
   /* EXCLUDE mode */
   zassert(group->group_filtermode_isexcl);
   
@@ -587,7 +590,7 @@
   source_mark_delete_flag(group->group_source_list);
 
   /* scan received sources (A) */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;
 
@@ -621,6 +624,8 @@
 static void isex_incl(struct igmp_group *group,
 		      int num_sources, struct in_addr *sources)
 {
+  int i;
+
   /* INCLUDE mode */
   zassert(!group->group_filtermode_isexcl);
   
@@ -628,7 +633,7 @@
   source_mark_delete_flag(group->group_source_list);
 
   /* scan received sources (B) */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;
 
@@ -702,12 +707,13 @@
 {
   struct igmp_sock *igmp = group->group_igmp_sock;
   int num_sources_tosend = listcount(group->group_source_list);
+  int i;
 
   /* Set SEND flag for all known sources (A) */
   source_mark_send_flag(group->group_source_list);
 
   /* Scan received sources (B) */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;
 
@@ -745,12 +751,13 @@
 {
   struct igmp_sock *igmp = group->group_igmp_sock;
   int num_sources_tosend;
+  int i;
 
   /* Set SEND flag for X (sources with timer > 0) */
   num_sources_tosend = source_mark_send_flag_by_timer(group->group_source_list);
 
   /* Scan received sources (A) */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;
 
@@ -821,6 +828,7 @@
 		      int num_sources, struct in_addr *sources)
 {
   int num_sources_tosend = 0;
+  int i;
 
   zassert(!group->group_filtermode_isexcl);
 
@@ -831,7 +839,7 @@
   source_clear_send_flag(group->group_source_list);
 
   /* Scan received sources (B) */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;
 
@@ -878,6 +886,7 @@
 		      int num_sources, struct in_addr *sources)
 {
   int num_sources_tosend = 0;
+  int i;
 
   /* set DELETE flag for all known sources (X,Y) */
   source_mark_delete_flag(group->group_source_list);
@@ -886,7 +895,7 @@
   source_clear_send_flag(group->group_source_list);
 
   /* scan received sources (A) */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;
     
@@ -1392,12 +1401,13 @@
 		       int num_sources, struct in_addr *sources)
 {
   int num_sources_tosend = 0;
+  int i;
 
   /* 1. clear off SEND flag from all known sources (X,Y) */
   source_clear_send_flag(group->group_source_list);
 
   /* 2. scan received sources (A) */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;
     
@@ -1438,12 +1448,13 @@
 		       int num_sources, struct in_addr *sources)
 {
   int num_sources_tosend = 0;
+  int i;
 
   /* 1. clear off SEND flag from all known sources (B) */
   source_clear_send_flag(group->group_source_list);
 
   /* 2. scan received sources (A) */
-  for (int i = 0; i < num_sources; ++i) {
+  for (i = 0; i < num_sources; ++i) {
     struct igmp_source *source;
     struct in_addr     *src_addr;