diff --git a/app/src/main/java/com/geeksville/mesh/model/ChannelOption.kt b/app/src/main/java/com/geeksville/mesh/model/ChannelOption.kt
index 9a6c4584a..d03465118 100644
--- a/app/src/main/java/com/geeksville/mesh/model/ChannelOption.kt
+++ b/app/src/main/java/com/geeksville/mesh/model/ChannelOption.kt
@@ -60,6 +60,7 @@ internal fun LoRaConfig.radioFreq(channelNum: Int): Float {
     return 0f
 }
 
+@Suppress("MagicNumber")
 enum class RegionInfo(
     val regionCode: RegionCode,
     val freqStart: Float,
@@ -69,7 +70,7 @@ enum class RegionInfo(
     EU_433(RegionCode.EU_433, 433.0f, 434.0f),
     EU_868(RegionCode.EU_868, 869.4f, 869.65f),
     CN(RegionCode.CN, 470.0f, 510.0f),
-    JP(RegionCode.JP, 920.8f, 927.8f),
+    JP(RegionCode.JP, 920.5f, 923.5f),
     ANZ(RegionCode.ANZ, 915.0f, 928.0f),
     RU(RegionCode.RU, 868.7f, 869.2f),
     KR(RegionCode.KR, 920.0f, 923.0f),