diff --git a/src/Base/UnitsSchemaInternal.cpp b/src/Base/UnitsSchemaInternal.cpp
index 1116e5d3a5..dfa74390c2 100644
--- a/src/Base/UnitsSchemaInternal.cpp
+++ b/src/Base/UnitsSchemaInternal.cpp
@@ -114,7 +114,7 @@ QString UnitsSchemaInternal::schemaTranslate(const Quantity &quant, double &fact
         }
     }
     else if (unit == Unit::ThermalConductivity) {
-        if (UnitValue < 1000) {
+        if (UnitValue > 1000000) {
             unitString = QString::fromLatin1("W/mm/K");
             factor = 1000000.0;
         }
diff --git a/src/Base/UnitsSchemaMKS.cpp b/src/Base/UnitsSchemaMKS.cpp
index fec428e237..65a1a355c0 100644
--- a/src/Base/UnitsSchemaMKS.cpp
+++ b/src/Base/UnitsSchemaMKS.cpp
@@ -143,7 +143,7 @@ QString UnitsSchemaMKS::schemaTranslate(const Quantity &quant, double &factor, Q
         }
     }
     else if (unit == Unit::ThermalConductivity) {
-        if (UnitValue < 1000) {
+        if (UnitValue > 1000000) {
             unitString = QString::fromLatin1("W/mm/K");
             factor = 1000000.0;
         }