diff --git a/include/avr/io/mcu/attiny13a/regs.hpp b/include/avr/io/mcu/attiny13a/regs.hpp
index 559d38d..263577f 100644
--- a/include/avr/io/mcu/attiny13a/regs.hpp
+++ b/include/avr/io/mcu/attiny13a/regs.hpp
@@ -447,6 +447,9 @@ AVR_IO_INLINE_GLOBAL(pcint2)
 AVR_IO_INLINE_GLOBAL(pcint1)
 AVR_IO_INLINE_GLOBAL(pcint0)
 
+template<typename Pin>
+bit<pcmsk_t, Pin::value> pcint_to(Pin pin) { return{}; }
+
 /** DIDR0 0x14 */
 using didr0_t = reg<0x14 + 0x20>;
 using adc0d_t = bit<didr0_t, 5>;
diff --git a/include/avr/io/mcu/attiny85/regs.hpp b/include/avr/io/mcu/attiny85/regs.hpp
index bfbf288..81875de 100644
--- a/include/avr/io/mcu/attiny85/regs.hpp
+++ b/include/avr/io/mcu/attiny85/regs.hpp
@@ -644,6 +644,9 @@ AVR_IO_INLINE_GLOBAL(pcint2)
 AVR_IO_INLINE_GLOBAL(pcint1)
 AVR_IO_INLINE_GLOBAL(pcint0)
 
+template<typename Pin>
+bit<pcmsk_t, Pin::value> pcint_to(Pin pin) { return{}; }
+    
 /** DIDR0 0x14 */
 using didr0_t = reg<0x14 + 0x20>;
 using adc0d_t = bit<didr0_t, 5>;