diff --git a/classlib/src/main/java/org/teavm/classlib/java/lang/SystemNativeGenerator.java b/classlib/src/main/java/org/teavm/classlib/java/lang/SystemNativeGenerator.java
index effde2a10..7189a4ab4 100644
--- a/classlib/src/main/java/org/teavm/classlib/java/lang/SystemNativeGenerator.java
+++ b/classlib/src/main/java/org/teavm/classlib/java/lang/SystemNativeGenerator.java
@@ -84,6 +84,7 @@ public class SystemNativeGenerator implements Generator, DependencyPlugin {
     }
 
     private void generateCurrentTimeMillis(SourceWriter writer) throws IOException {
+        writer.append(writer.getNaming().getNameFor("java.lang.System")).append("_$callClinit();").softNewLine();
         writer.append("return Long_fromNumber(new Date().getTime());").softNewLine();
     }