diff --git a/tasmota/support.ino b/tasmota/support.ino
index 879a91fb0..0a5d26f10 100644
--- a/tasmota/support.ino
+++ b/tasmota/support.ino
@@ -167,6 +167,8 @@ float CharToFloat(const char *str)
   float right = 0;
   if (*pt == '.') {
     pt++;
+    // limit decimals to float max
+    pt[7]=0;
     right = atoi(pt);                              // Decimal part
     while (isdigit(*pt)) {
       pt++;
@@ -1908,4 +1910,4 @@ String Decompress(const char * compressed, size_t uncompressed_size) {
   return content;
 }
 
-#endif // USE_UNISHOX_COMPRESSION
\ No newline at end of file
+#endif // USE_UNISHOX_COMPRESSION