diff --git a/gradle.properties b/gradle.properties
index e50a07cf2..6d1a97dec 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -22,4 +22,5 @@ org.gradle.unsafe.configuration-cache=true
 teavm.project.version=0.9.0-SNAPSHOT
 teavm.tests.decodeStack=false
 teavm.tests.optimized=true
-teavm.tests.minified=false
\ No newline at end of file
+teavm.tests.minified=false
+teavm.tests.c=true
\ No newline at end of file