diff --git a/esp-knx-ip-conversion.cpp b/esp-knx-ip-conversion.cpp
index 9dc2fd5..c260e05 100644
--- a/esp-knx-ip-conversion.cpp
+++ b/esp-knx-ip-conversion.cpp
@@ -83,5 +83,7 @@ uint32_t ESPKNXIP::data_to_4byte_uint(uint8_t *data)
 
 float ESPKNXIP::data_to_4byte_float(uint8_t *data)
 {
-	return (float)((data[1] << 24) | (data[2] << 16) | (data[3] << 8) |data[4]);
-}
\ No newline at end of file
+	union { float f; uint32_t i; } num;
+	num.i = (uint32_t)((data[1] << 24) | (data[2] << 16) | (data[3] << 8) | (data[4] << 0));
+	return num.f;
+}
diff --git a/esp-knx-ip-send.cpp b/esp-knx-ip-send.cpp
index e3e74ea..23e3c77 100644
--- a/esp-knx-ip-send.cpp
+++ b/esp-knx-ip-send.cpp
@@ -174,7 +174,13 @@ void ESPKNXIP::send_4byte_uint(address_t const &receiver, knx_command_type_t ct,
 
 void ESPKNXIP::send_4byte_float(address_t const &receiver, knx_command_type_t ct, float val)
 {
-	uint8_t buf[] = {0x00, ((uint8_t *)&val)[3], ((uint8_t *)&val)[2], ((uint8_t *)&val)[1], ((uint8_t *)&val)[0]};
+	union { float f; uint32_t i; } num;
+	num.f = val;
+	uint8_t buf[] = {0x00,
+	                 (uint8_t)((num.i & 0xFF000000) >> 24),
+	                 (uint8_t)((num.i & 0x00FF0000) >> 16),
+	                 (uint8_t)((num.i & 0x0000FF00) >> 8),
+	                 (uint8_t)((num.i & 0x000000FF) >> 0)};
 	send(receiver, ct, 5, buf);
 }