diff --git a/esphome/components/bl0939/bl0939.cpp b/esphome/components/bl0939/bl0939.cpp
index 54cd86003e6..a1416881ccb 100644
--- a/esphome/components/bl0939/bl0939.cpp
+++ b/esphome/components/bl0939/bl0939.cpp
@@ -20,7 +20,7 @@ static const uint8_t BL0939_REG_SOFT_RESET = 0x19;
 static const uint8_t BL0939_REG_USR_WRPROT = 0x1A;
 static const uint8_t BL0939_REG_TPS_CTRL = 0x1B;
 
-static const uint8_t BL0939_INIT[6][6] PROGMEM = {
+static constexpr uint8_t BL0939_INIT[6][6] PROGMEM = {
     // Reset to default
     {BL0939_WRITE_COMMAND, BL0939_REG_SOFT_RESET, 0x5A, 0x5A, 0x5A, 0x33},
     // Enable User Operation Write