diff --git a/gradle.properties b/gradle.properties
index 9e8d00ac..b1ca82e3 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -49,6 +49,12 @@ org.jetbrains.dokka.experimental.gradle.pluginMode=V2Enabled
 # See https://kotlinlang.org/docs/js-project-setup.html#npm-dependencies
 kotlin.js.yarn=false
 
+# Accept TeamCity messages larger than 1MB
+# By default, KGP fails test suites if the test logs are too large.
+# Some of our projects are large enough that this becomes a problem.
+# We are not aware of downsides nor of documentation of this flag.
+kotlin.ignore.tcsm.overflow=true
+
 # System resource usage
 org.gradle.jvmargs=-Xmx4g -Xms200m -XX:MaxMetaspaceSize=640m -XX:+UseCompressedOops -XX:+UseG1GC -XX:NewRatio=3 -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40 -XX:G1PeriodicGCInterval=60000 -XX:-G1PeriodicGCInvokesConcurrent
 kotlin.daemon.jvmargs=-Xmx3g -Xms128m -XX:MaxMetaspaceSize=512m -XX:+UseG1GC -XX:NewRatio=2 -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=40 -XX:G1PeriodicGCInterval=15000 -XX:-G1PeriodicGCInvokesConcurrent