diff --git a/openrtx/include/datatypes.h b/openrtx/include/datatypes.h
index 01a43fc8..a6106cf8 100644
--- a/openrtx/include/datatypes.h
+++ b/openrtx/include/datatypes.h
@@ -20,6 +20,8 @@
 #ifndef DATATYPES_H
 #define DATATYPES_H
 
+#include <stdint.h>
+
 /**                                                                             
  * \brief CTCSS and DCS type definition.                                        
  *                                                                              
@@ -37,6 +39,6 @@ typedef unsigned int tone_t;
  *                                                                              
  * Frequency type unit in Hz, able to hold SHF frequencies.                     
  */ 
-typedef float freq_t;
+typedef uint32_t freq_t;
 
 #endif /* DATATYPES_H */
diff --git a/openrtx/src/ui.c b/openrtx/src/ui.c
index 59c74b16..e17476c6 100644
--- a/openrtx/src/ui.c
+++ b/openrtx/src/ui.c
@@ -221,10 +221,10 @@ void _ui_drawVFO()
 {
     // Print VFO frequencies
     char freq_buf[20] = "";
-    snprintf(freq_buf, sizeof(freq_buf), "Rx: %09.5f", state.rx_freq);
+    snprintf(freq_buf, sizeof(freq_buf), "Rx: %09.5f", ((float) state.rx_freq));
     gfx_print(layout.line2_pos, freq_buf, layout.line1_font, TEXT_ALIGN_CENTER,
               color_white);
-    snprintf(freq_buf, sizeof(freq_buf), "Tx: %09.5f", state.tx_freq);
+    snprintf(freq_buf, sizeof(freq_buf), "Tx: %09.5f", ((float) state.tx_freq));
     gfx_print(layout.line3_pos, freq_buf, layout.line2_font, TEXT_ALIGN_CENTER,
               color_white);
 }