diff --git a/src/Adafruit_Si4713.h b/src/Adafruit_Si4713.h
index cab5898..0fcf6a2 100644
--- a/src/Adafruit_Si4713.h
+++ b/src/Adafruit_Si4713.h
@@ -35,7 +35,7 @@
 #define SI4710_CMD_GET_REV 0x10 ///< Returns revision information on the device.
 #define SI4710_CMD_POWER_DOWN 0x11     ///< Power down device
 #define SI4710_CMD_SET_PROPERTY 0x12   ///< Sets the value of a property.
-#define SI4710_CMD_GET_PROPERTY 0x13   ///< Retrieves a property’s value.
+#define SI4710_CMD_GET_PROPERTY 0x13   ///< Retrieves a property's value.
 #define SI4710_CMD_GET_INT_STATUS 0x14 ///< Read interrupt status bits.
 #define SI4710_CMD_PATCH_ARGS                                                  \
   0x15 ///< Reserved command used for patch file downloads.