diff --git a/libopenjpeg/jp2.c b/libopenjpeg/jp2.c
index f60e9e49..9ed7f5a0 100644
--- a/libopenjpeg/jp2.c
+++ b/libopenjpeg/jp2.c
@@ -1916,6 +1916,7 @@ void jp2_setup_encoder(opj_jp2_t *jp2, opj_cparameters_t *parameters, opj_image_
 opj_bool opj_jp2_encode(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info) {
 
 	int pos_iptr, pos_cidx, pos_jp2c, len_jp2c, len_cidx, end_pos, pos_fidx, len_fidx;
+	pos_jp2c = pos_iptr = -1; /* remove a warning */
 
 	/* JP2 encoding */
 
diff --git a/libopenjpeg/phix_manager.c b/libopenjpeg/phix_manager.c
index 7d993c2e..0e2e5704 100644
--- a/libopenjpeg/phix_manager.c
+++ b/libopenjpeg/phix_manager.c
@@ -88,6 +88,8 @@ int write_phixfaix( int coff, int compno, opj_codestream_info_t cstr_info, opj_b
   opj_packet_info_t packet;
   int resno, precno, layno, num_packet;
   int numOfres, numOfprec, numOflayers;
+  packet.end_ph_pos = packet.start_pos = -1;
+  (void)EPHused; /* unused ? */
 
   if( j2klen > pow( 2, 32)){
     size_of_coding =  8;
diff --git a/libopenjpeg/ppix_manager.c b/libopenjpeg/ppix_manager.c
index 8ce9f6da..5afbbfd7 100644
--- a/libopenjpeg/ppix_manager.c
+++ b/libopenjpeg/ppix_manager.c
@@ -55,6 +55,7 @@ int write_ppix( int coff, opj_codestream_info_t cstr_info, opj_bool EPHused, int
 
   /*  printf("cstr_info.packno %d\n", cstr_info.packno); //NMAX? */
 
+  lenp = -1;
   box = (opj_jp2_box_t *)opj_calloc( cstr_info.numcomps, sizeof(opj_jp2_box_t));
   
   for (i=0;i<2;i++){
@@ -89,6 +90,8 @@ int write_ppixfaix( int coff, int compno, opj_codestream_info_t cstr_info, opj_b
   opj_packet_info_t packet;
   int resno, precno, layno, num_packet;
   int numOfres, numOfprec, numOflayers;
+  packet.end_pos = packet.end_ph_pos = packet.start_pos = -1;
+  (void)EPHused; /* unused ? */
 
   if( j2klen > pow( 2, 32)){
     size_of_coding =  8;