diff --git a/src/Tests/Makefile.am b/src/Tests/Makefile.am
index a142d4a..45a278a 100644
--- a/src/Tests/Makefile.am
+++ b/src/Tests/Makefile.am
@@ -63,8 +63,7 @@ test_unit_LDADD=\
 
 test_regression_SOURCES=\
 	main.cpp \
-	Regression/test_Rule_ghi37.cpp \
-	Regression/test_json_locale.cpp
+	Regression/test_Rule_ghi37.cpp
 
 test_regression_LDADD=\
 	$(top_builddir)/libusbguard.la