diff --git a/Makefile.am b/Makefile.am
index 9bbc3e3..16fd160 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -152,7 +152,7 @@ EXTRA_DIST += $(TESTS)
 
 AM_TESTS_ENVIRONMENT =				\
   PATH="$(abs_top_builddir):$$PATH" LC_ALL=C	\
-  SHELL="$(SHELL)" GUILE="$(GUILE)"
+  SHELL="$(SHELL)" GUILE="$(GUILE)"		\
   GUILE_LOAD_PATH="$(abs_top_srcdir)/modules:$(abs_top_builddir)/modules:$$GUILE_LOAD_PATH" \
   GUILE_LOAD_COMPILED_PATH="$(abs_top_srcdir)/modules:$(abs_top_builddir)/modules:$$GUILE_LOAD_COMPILED_PATH"