diff --git a/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspAATask.kt b/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspAATask.kt
index be5e8c4..1d3684b 100644
--- a/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspAATask.kt
+++ b/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspAATask.kt
@@ -218,7 +218,7 @@
                                     provider.asArguments().forEach { argument ->
                                         val kv = Regex("(\\S+)=(\\S+)").matchEntire(argument)?.groupValues
                                         require(kv != null && kv.size == 3) {
-                                            "KSP apoption does not match (\\S+)=(\\S+): $argument"
+                                            "Processor arguments not in the format \\S+=\\S+: $argument"
                                         }
                                         put(kv[1], kv[2])
                                     }
diff --git a/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt b/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt
index 67112c2..ebdfbe3 100644
--- a/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt
+++ b/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt
@@ -194,7 +194,7 @@
                     providers.flatMap { provider ->
                         provider.asArguments().map { argument ->
                             require(argument.matches(Regex("\\S+=\\S+"))) {
-                                "KSP apoption does not match \\S+=\\S+: $argument"
+                                "Processor arguments not in the format \\S+=\\S+: $argument"
                             }
                             InternalSubpluginOption("apoption", argument)
                         }
diff --git a/gradle-plugin/src/test/kotlin/com/google/devtools/ksp/gradle/GradleCompilationTest.kt b/gradle-plugin/src/test/kotlin/com/google/devtools/ksp/gradle/GradleCompilationTest.kt
index 63d63b9..27ccd4c 100644
--- a/gradle-plugin/src/test/kotlin/com/google/devtools/ksp/gradle/GradleCompilationTest.kt
+++ b/gradle-plugin/src/test/kotlin/com/google/devtools/ksp/gradle/GradleCompilationTest.kt
@@ -306,7 +306,7 @@
         )
 
         val result = testRule.runner().withArguments(":app:assemble").buildAndFail()
-        assertThat(result.output).contains("KSP apoption does not match \\S+=\\S+: invalid")
+        assertThat(result.output).contains("Processor arguments not in the format \\S+=\\S+: invalid")
     }
 
     @Test