diff --git a/Tests/Complex/Library/sharedFile.h b/Tests/Complex/Library/sharedFile.h
index 4cdb7a1b8..65ac2e2ba 100644
--- a/Tests/Complex/Library/sharedFile.h
+++ b/Tests/Complex/Library/sharedFile.h
@@ -5,7 +5,7 @@
 #  define CMakeTest_EXPORT __declspec(dllimport)
 #endif
 #else
-// unix needs nothing
+/* unix needs nothing */
 #define CMakeTest_EXPORT
 #endif
 
diff --git a/Tests/ComplexOneConfig/Library/sharedFile.h b/Tests/ComplexOneConfig/Library/sharedFile.h
index 4cdb7a1b8..65ac2e2ba 100644
--- a/Tests/ComplexOneConfig/Library/sharedFile.h
+++ b/Tests/ComplexOneConfig/Library/sharedFile.h
@@ -5,7 +5,7 @@
 #  define CMakeTest_EXPORT __declspec(dllimport)
 #endif
 #else
-// unix needs nothing
+/* unix needs nothing */
 #define CMakeTest_EXPORT
 #endif
 
diff --git a/Tests/ComplexRelativePaths/Library/sharedFile.h b/Tests/ComplexRelativePaths/Library/sharedFile.h
index 4cdb7a1b8..65ac2e2ba 100644
--- a/Tests/ComplexRelativePaths/Library/sharedFile.h
+++ b/Tests/ComplexRelativePaths/Library/sharedFile.h
@@ -5,7 +5,7 @@
 #  define CMakeTest_EXPORT __declspec(dllimport)
 #endif
 #else
-// unix needs nothing
+/* unix needs nothing */
 #define CMakeTest_EXPORT
 #endif