diff --git a/core/embed/io/display/inc/io/display.h b/core/embed/io/display/inc/io/display.h
index fb04fba8e2c..3be4e262611 100644
--- a/core/embed/io/display/inc/io/display.h
+++ b/core/embed/io/display/inc/io/display.h
@@ -139,7 +139,7 @@ void display_refresh(void);
 
 // Following functions define display's bitblt interface.
 //
-// These functions draw directly to to display or to the
+// These functions draw directly to the display or to the
 // currently inactive framebuffer.
 //
 // bb->dst_row and bb->dst_stride must be 0
diff --git a/core/embed/rtl/inc/rtl/sizedefs.h b/core/embed/rtl/inc/rtl/sizedefs.h
index ca29479bfca..af2e73c6dd2 100644
--- a/core/embed/rtl/inc/rtl/sizedefs.h
+++ b/core/embed/rtl/inc/rtl/sizedefs.h
@@ -59,7 +59,7 @@
     (((addr) & ((align)-1)) == 0); \
   })
 
-// Ensures that that 'addr' is properly aligned to 'align', which
+// Ensures that 'addr' is properly aligned to 'align', which
 // must be a power of two.
 #define ENSURE_ALIGNMENT(addr, align) \
   _Static_assert(IS_ALIGNED(addr, align), "Address must be aligned")
diff --git a/core/embed/sys/power_manager/inc/sys/pmic.h b/core/embed/sys/power_manager/inc/sys/pmic.h
index d2b9905b22c..29c88e293f0 100644
--- a/core/embed/sys/power_manager/inc/sys/pmic.h
+++ b/core/embed/sys/power_manager/inc/sys/pmic.h
@@ -101,7 +101,7 @@ bool pmic_enter_shipmode(void);
 //
 // The function returns `false` if the measurement cannot be started
 // (e.g. because the previous measurement is still in progress or
-// the the driver is not initialized).
+// the driver is not initialized).
 bool pmic_measure(pmic_report_callback_t callback, void* context);
 
 // Synchroneous version of the `pmic_measure` function.