diff --git a/common/src/main/java/com/regnosys/rosetta/common/compile/JavaCSourceCancellableCompiler.java b/common/src/main/java/com/regnosys/rosetta/common/compile/JavaCSourceCancellableCompiler.java
index 94ec8264..091180ba 100644
--- a/common/src/main/java/com/regnosys/rosetta/common/compile/JavaCSourceCancellableCompiler.java
+++ b/common/src/main/java/com/regnosys/rosetta/common/compile/JavaCSourceCancellableCompiler.java
@@ -147,6 +147,7 @@ private JavaCompiler.CompilationTask getCompilationTask(List<Path> sourceJavaPat
         StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnosticCollector, null, null);
         List<File> sourceFiles = sourceJavaPaths.stream().map(Path::toFile).collect(Collectors.toList());
         Iterable<? extends JavaFileObject> javaFileObjects = fileManager.getJavaFileObjectsFromFiles(sourceFiles);
+        LOGGER.debug("Compiling {} java files to {}", sourceFiles.size(), targetPath);
         return compiler.getTask(null, fileManager, diagnosticCollector, compilerArguments, null, javaFileObjects);
     }
 
@@ -172,6 +173,7 @@ private List<String> createCompilerArguments(Path targetPath) {
         args.add("--release");
         args.add(releaseFlag.getVersion());
 
+        LOGGER.debug("Java version {} and compiler arguments: {}", System.getProperty("java.version"), args);
         return args;
     }