diff --git a/src/data/kotlin/ru/dbotthepony/mc/otm/datagen/lang/English.kt b/src/data/kotlin/ru/dbotthepony/mc/otm/datagen/lang/English.kt
index 8755aca87..ff508b9cb 100644
--- a/src/data/kotlin/ru/dbotthepony/mc/otm/datagen/lang/English.kt
+++ b/src/data/kotlin/ru/dbotthepony/mc/otm/datagen/lang/English.kt
@@ -261,6 +261,8 @@ private fun misc(provider: MatteryLanguageProvider) {
 		misc("suffix.exa", "%s E%s")
 		misc("suffix.zetta", "%s Z%s")
 		misc("suffix.yotta", "%s Y%s")
+		misc("suffix.ronna", "%s R%s")
+		misc("suffix.quetta", "%s Q%s")
 
 		misc("suffix.deci", "%s d%s")
 		misc("suffix.centi", "%s c%s")
@@ -282,6 +284,8 @@ private fun misc(provider: MatteryLanguageProvider) {
 		misc("suffix_concise.exa", "%sE")
 		misc("suffix_concise.zetta", "%sZ")
 		misc("suffix_concise.yotta", "%sY")
+		misc("suffix_concise.ronna", "%sR")
+		misc("suffix_concise.quetta", "%sQ")
 
 		misc("suffix_concise.deci", "%sd")
 		misc("suffix_concise.centi", "%sc")
@@ -302,6 +306,9 @@ private fun misc(provider: MatteryLanguageProvider) {
 		misc("suffix_raw.exa", "E")
 		misc("suffix_raw.zetta", "Z")
 		misc("suffix_raw.yotta", "Y")
+		misc("suffix_raw.ronna", "R")
+		misc("suffix_raw.quetta", "Q")
+
 		misc("suffix_raw.deci", "d")
 		misc("suffix_raw.centi", "c")
 		misc("suffix_raw.milli", "m")
diff --git a/src/data/kotlin/ru/dbotthepony/mc/otm/datagen/lang/Russian.kt b/src/data/kotlin/ru/dbotthepony/mc/otm/datagen/lang/Russian.kt
index d45ac6c92..4a059c766 100644
--- a/src/data/kotlin/ru/dbotthepony/mc/otm/datagen/lang/Russian.kt
+++ b/src/data/kotlin/ru/dbotthepony/mc/otm/datagen/lang/Russian.kt
@@ -269,6 +269,8 @@ private fun misc(provider: MatteryLanguageProvider) {
 		misc("suffix.exa", "%s Э%s")
 		misc("suffix.zetta", "%s З%s")
 		misc("suffix.yotta", "%s И%s")
+		misc("suffix.ronna", "%s Рн%s")
+		misc("suffix.quetta", "%s Кв%s")
 
 		misc("suffix.deci", "%s д%s")
 		misc("suffix.centi", "%s с%s")
@@ -290,6 +292,9 @@ private fun misc(provider: MatteryLanguageProvider) {
 		misc("suffix_concise.exa", "%sЭ")
 		misc("suffix_concise.zetta", "%sЗ")
 		misc("suffix_concise.yotta", "%sИ")
+		misc("suffix_concise.ronna", "%sРн")
+		misc("suffix_concise.quetta", "%sКв")
+
 		misc("suffix_concise.deci", "%sд")
 		misc("suffix_concise.centi", "%sс")
 		misc("suffix_concise.milli", "%sм")
@@ -309,6 +314,9 @@ private fun misc(provider: MatteryLanguageProvider) {
 		misc("suffix_raw.exa", "Э")
 		misc("suffix_raw.zetta", "З")
 		misc("suffix_raw.yotta", "И")
+		misc("suffix_raw.ronna", "Рн")
+		misc("suffix_raw.quetta", "Кв")
+
 		misc("suffix_raw.deci", "д")
 		misc("suffix_raw.centi", "с")
 		misc("suffix_raw.milli", "м")
diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/core/util/SiPrefix.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/core/util/SiPrefix.kt
index 0b21620a0..7f4507279 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/core/util/SiPrefix.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/core/util/SiPrefix.kt
@@ -9,14 +9,14 @@ import java.math.BigInteger
 import kotlin.math.absoluteValue
 
 enum class SiPrefix(val power: Int, val symbol: String) {
-	YOCTO(-8,   "y"),
-	ZEPTO(-7,   "z"),
-	ATTO (-6,   "a"),
-	FEMTO(-5,   "f"),
-	PICO (-4,   "p"),
-	NANO (-3,   "n"),
-	MICRO(-2,   "μ"),
-	MILLI(-1,   "m"),
+	YOCTO (-8,   "y"),
+	ZEPTO (-7,   "z"),
+	ATTO  (-6,   "a"),
+	FEMTO (-5,   "f"),
+	PICO  (-4,   "p"),
+	NANO  (-3,   "n"),
+	MICRO (-2,   "μ"),
+	MILLI (-1,   "m"),
 
 	NONE(0,      "") {
 		override val isEmpty: Boolean
@@ -26,14 +26,16 @@ enum class SiPrefix(val power: Int, val symbol: String) {
 			get() = 0
 	},
 
-	KILO (1,    "k"),
-	MEGA (2,    "M"),
-	GIGA (3,    "G"),
-	TERA (4,    "T"),
-	PETA (5,    "P"),
-	EXA  (6,    "E"),
-	ZETTA(7,    "Z"),
-	YOTTA(8,    "Y");
+	KILO  (1,    "k"),
+	MEGA  (2,    "M"),
+	GIGA  (3,    "G"),
+	TERA  (4,    "T"),
+	PETA  (5,    "P"),
+	EXA   (6,    "E"),
+	ZETTA (7,    "Z"),
+	YOTTA (8,    "Y"),
+	RONNA (9,    "R"),
+	QUETTA(10,   "Q");
 
 	open val isEmpty: Boolean get() = false