diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrorsDefaultMessages.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrorsDefaultMessages.kt
index cf59860c603..d6238531a6c 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrorsDefaultMessages.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrorsDefaultMessages.kt
@@ -1734,7 +1734,7 @@ object FirErrorsDefaultMessages : BaseDiagnosticRendererFactory() {
         )
         map.put(
             CONFUSING_BRANCH_CONDITION,
-            "The logical expressions may be understood ambiguously in when with subject branches. Please wrap it with parenthesis"
+            "The logical expressions may be understood ambiguously in when with subject branches. Please wrap it with parentheses"
         )
 
         // Context tracking
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
index af96f13dfff..de43ee99b0d 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
+++ b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
@@ -860,7 +860,7 @@ public class DefaultErrorMessages {
         MAP.put(SENSELESS_NULL_IN_WHEN, "Expression under 'when' is never equal to null");
 
         MAP.put(INVALID_IF_AS_EXPRESSION, "'if' must have both main and 'else' branches if used as an expression");
-        MAP.put(CONFUSING_BRANCH_CONDITION, "The logical expressions may be understood ambiguously in when with subject branches. Please wrap it with parenthesis");
+        MAP.put(CONFUSING_BRANCH_CONDITION, "The logical expressions may be understood ambiguously in when with subject branches. Please wrap it with parentheses");
         MAP.put(INVALID_IF_AS_EXPRESSION_WARNING, "'if' must have both main and 'else' branches if used as an expression. See https://youtrack.jetbrains.com/issue/KT-44705 for details");
 
         MAP.put(OVERRIDING_FINAL_MEMBER, "''{0}'' in ''{1}'' is final and cannot be overridden", NAME, NAME);