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-rw-r--r--driver_geostar.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/driver_geostar.c b/driver_geostar.c
index 88cd7e6e..47150517 100644
--- a/driver_geostar.c
+++ b/driver_geostar.c
@@ -29,7 +29,7 @@
static int decode_channel_id (uint32_t ch_id) {
int num = 0;
num = (int)(ch_id & 0x1F); /* SV ID */
- if((ch_id & (1<<30)) == 0) num += GLONASS_PRN_MAP; /* GLONASS SV */
+ if((ch_id & (1<<30)) == 0) num += GLONASS_PRN_OFFSET; /* GLONASS SV */
else if (num == 0 ) num = 32; /* GPS SV */
return num;
}