diff --git a/esphome/components/weikai_spi/weikai_spi.cpp b/esphome/components/weikai_spi/weikai_spi.cpp
index 7bcb817f09..20671a5815 100644
--- a/esphome/components/weikai_spi/weikai_spi.cpp
+++ b/esphome/components/weikai_spi/weikai_spi.cpp
@@ -10,13 +10,6 @@ namespace weikai_spi {
 using namespace weikai;
 static const char *const TAG = "weikai_spi";
 
-/// @brief convert an int to binary representation as C++ std::string
-/// @param val integer to convert
-/// @return a std::string
-inline std::string i2s(uint8_t val) { return std::bitset<8>(val).to_string(); }
-/// Convert std::string to C string
-#define I2S2CS(val) (i2s(val).c_str())
-
 /// @brief measure the time elapsed between two calls
 /// @param last_time time of the previous call
 /// @return the elapsed time in microseconds
@@ -107,7 +100,8 @@ uint8_t WeikaiRegisterSPI::read_reg() const {
   spi_comp->write_byte(cmd);
   uint8_t val = spi_comp->read_byte();
   spi_comp->disable();
-  ESP_LOGVV(TAG, "WeikaiRegisterSPI::read_reg() cmd=%s(%02X) reg=%s ch=%d buf=%02X", I2S2CS(cmd), cmd,
+  char bin_buf[9];
+  ESP_LOGVV(TAG, "WeikaiRegisterSPI::read_reg() cmd=%s(%02X) reg=%s ch=%d buf=%02X", format_bin_to(bin_buf, cmd), cmd,
             reg_to_str(this->register_, this->comp_->page1()), this->channel_, val);
   return val;
 }
@@ -120,8 +114,9 @@ void WeikaiRegisterSPI::read_fifo(uint8_t *data, size_t length) const {
   spi_comp->read_array(data, length);
   spi_comp->disable();
 #ifdef ESPHOME_LOG_HAS_VERY_VERBOSE
-  ESP_LOGVV(TAG, "WeikaiRegisterSPI::read_fifo() cmd=%s(%02X) ch=%d len=%d buffer", I2S2CS(cmd), cmd, this->channel_,
-            length);
+  char bin_buf[9];
+  ESP_LOGVV(TAG, "WeikaiRegisterSPI::read_fifo() cmd=%s(%02X) ch=%d len=%d buffer", format_bin_to(bin_buf, cmd), cmd,
+            this->channel_, length);
   print_buffer(data, length);
 #endif
 }
@@ -132,8 +127,9 @@ void WeikaiRegisterSPI::write_reg(uint8_t value) {
   spi_comp->enable();
   spi_comp->write_array(buf, 2);
   spi_comp->disable();
-  ESP_LOGVV(TAG, "WeikaiRegisterSPI::write_reg() cmd=%s(%02X) reg=%s ch=%d buf=%02X", I2S2CS(buf[0]), buf[0],
-            reg_to_str(this->register_, this->comp_->page1()), this->channel_, buf[1]);
+  char bin_buf[9];
+  ESP_LOGVV(TAG, "WeikaiRegisterSPI::write_reg() cmd=%s(%02X) reg=%s ch=%d buf=%02X", format_bin_to(bin_buf, buf[0]),
+            buf[0], reg_to_str(this->register_, this->comp_->page1()), this->channel_, buf[1]);
 }
 
 void WeikaiRegisterSPI::write_fifo(uint8_t *data, size_t length) {
@@ -145,8 +141,9 @@ void WeikaiRegisterSPI::write_fifo(uint8_t *data, size_t length) {
   spi_comp->disable();
 
 #ifdef ESPHOME_LOG_HAS_VERY_VERBOSE
-  ESP_LOGVV(TAG, "WeikaiRegisterSPI::write_fifo() cmd=%s(%02X) ch=%d len=%d buffer", I2S2CS(cmd), cmd, this->channel_,
-            length);
+  char bin_buf[9];
+  ESP_LOGVV(TAG, "WeikaiRegisterSPI::write_fifo() cmd=%s(%02X) ch=%d len=%d buffer", format_bin_to(bin_buf, cmd), cmd,
+            this->channel_, length);
   print_buffer(data, length);
 #endif
 }
diff --git a/esphome/components/weikai_spi/weikai_spi.h b/esphome/components/weikai_spi/weikai_spi.h
index dd0dc8d495..a75b85dc8e 100644
--- a/esphome/components/weikai_spi/weikai_spi.h
+++ b/esphome/components/weikai_spi/weikai_spi.h
@@ -6,7 +6,6 @@
 ///          wk2124_spi, wk2132_spi, wk2168_spi, wk2204_spi, wk2212_spi,
 
 #pragma once
-#include <bitset>
 #include <memory>
 #include "esphome/core/component.h"
 #include "esphome/components/uart/uart.h"