diff --git a/src/algorithms/libs/rtklib/rtklib_ionex.cc b/src/algorithms/libs/rtklib/rtklib_ionex.cc
index 877044c9e..58e5653a0 100644
--- a/src/algorithms/libs/rtklib/rtklib_ionex.cc
+++ b/src/algorithms/libs/rtklib/rtklib_ionex.cc
@@ -165,7 +165,7 @@ void readionexdcb(FILE *fp, double *dcb, double *rms)
 
             if (strstr(label, "PRN / BIAS / RMS") == label)
                 {
-                    int ret = std::snprintf(id, 3, "%s", buff + 3);
+                    int ret = std::snprintf(id, 3, "%s", buff + 3);  // NOLINT(runtime/printf)
                     if (ret >= 0 && ret < 3)
                         {
                             if (!(sat = satid2no(id)))
diff --git a/src/algorithms/libs/rtklib/rtklib_preceph.cc b/src/algorithms/libs/rtklib/rtklib_preceph.cc
index 6ab4d8af8..9cbb88509 100644
--- a/src/algorithms/libs/rtklib/rtklib_preceph.cc
+++ b/src/algorithms/libs/rtklib/rtklib_preceph.cc
@@ -123,7 +123,7 @@ int readsp3h(FILE *fp, gtime_t *time, char *type, int *sats,
                 }
             else if (i == 12)
                 {
-                    int ret = std::snprintf(tsys, 3, "%s", buff + 9);
+                    int ret = std::snprintf(tsys, 3, "%s", buff + 9);  // NOLINT(runtime/printf)
                     if (ret < 0 || ret > 3)
                         {
                             trace(3, "Error reading sp3 header\n");
diff --git a/src/algorithms/libs/rtklib/rtklib_rtkcmn.cc b/src/algorithms/libs/rtklib/rtklib_rtkcmn.cc
index 8f4b68023..53c67fa88 100644
--- a/src/algorithms/libs/rtklib/rtklib_rtkcmn.cc
+++ b/src/algorithms/libs/rtklib/rtklib_rtkcmn.cc
@@ -2847,7 +2847,7 @@ int readantex(const char *file, pcvs_t *pcvs)
                 {
                     strncpy(pcv.type, buff, 20);  // MAXANT (64)
                     pcv.type[20] = '\0';
-                    int ret = std::snprintf(pcv.code, 20, "%s", buff + 20);  // MAXANT (64)
+                    int ret = std::snprintf(pcv.code, 20, "%s", buff + 20);  // NOLINT(runtime/printf)
                     if (ret >= 0 && ret < 20)
                         {
                             if (!strncmp(pcv.code + 3, "        ", 8))
diff --git a/src/algorithms/libs/rtklib/rtklib_stream.cc b/src/algorithms/libs/rtklib/rtklib_stream.cc
index 3c0e56aad..e9a29cf3f 100644
--- a/src/algorithms/libs/rtklib/rtklib_stream.cc
+++ b/src/algorithms/libs/rtklib/rtklib_stream.cc
@@ -795,7 +795,7 @@ void decodetcppath(const char *path, char *addr, char *port, char *user,
         }
     if (addr)
         {
-            int ret = std::snprintf(addr, 256, "%s", p);
+            int ret = std::snprintf(addr, 256, "%s", p);  // NOLINT(runtime/printf)
             if (ret < 0 || ret >= 256)
                 {
                     tracet(1, "error reading address");
@@ -1080,7 +1080,7 @@ void updatetcpsvr(tcpsvr_t *tcpsvr, char *msg)
                 {
                     continue;
                 }
-            std::snprintf(saddr, 256, "%s", tcpsvr->cli[i].saddr);
+            std::snprintf(saddr, sizeof(saddr), "%s", tcpsvr->cli[i].saddr);
             n++;
         }
     if (n == 0)
@@ -1970,7 +1970,7 @@ void *ftpthread(void *arg)
         }
     if (fs::exists(tmpfile))
         {
-            std::snprintf(ftp->local, 1024, "%s", tmpfile.c_str());
+            std::snprintf(ftp->local, 1024, "%s", tmpfile.c_str());  // NOLINT(runtime/printf)
             tracet(3, "ftpthread: file exists %s\n", ftp->local);
             ftp->state = 2;
             return nullptr;
@@ -2051,7 +2051,7 @@ void *ftpthread(void *arg)
                     break;
                 }
         }
-    int ret2 = std::snprintf(ftp->local, 1024, "%s", local.c_str());
+    int ret2 = std::snprintf(ftp->local, 1024, "%s", local.c_str());  // NOLINT(runtime/printf)
     if (ret2 < 0 || ret2 >= 1024)
         {
             tracet(3, "Error reading ftp local\n");