diff --git a/ports/unix/mphalport.h b/ports/unix/mphalport.h
index 6f2880d4ef..4e459ffca5 100644
--- a/ports/unix/mphalport.h
+++ b/ports/unix/mphalport.h
@@ -24,12 +24,14 @@
  * THE SOFTWARE.
  */
 #include <unistd.h>
+#include <stdbool.h>
 
 #ifndef CHAR_CTRL_C
 #define CHAR_CTRL_C (3)
 #endif
 
 void mp_hal_set_interrupt_char(char c);
+bool mp_hal_is_interrupted(void);
 
 void mp_hal_stdio_mode_raw(void);
 void mp_hal_stdio_mode_orig(void);
diff --git a/ports/unix/unix_mphal.c b/ports/unix/unix_mphal.c
index e9494d7ff2..77deb3152f 100644
--- a/ports/unix/unix_mphal.c
+++ b/ports/unix/unix_mphal.c
@@ -81,6 +81,10 @@ void mp_hal_set_interrupt_char(char c) {
     }
 }
 
+bool mp_hal_is_interrupted(void) {
+    return false;
+}
+
 #if MICROPY_USE_READLINE == 1
 
 #include <termios.h>