diff --git a/doc/docutils/Makefile.am b/doc/docutils/Makefile.am
index a757dd6f7..867fd0a30 100644
--- a/doc/docutils/Makefile.am
+++ b/doc/docutils/Makefile.am
@@ -45,16 +45,16 @@ SPHINX_LD_LIBRARY_PATH = $(KERNEL_ROOT_DIR)/lib/salome:$(OMNIORB_ROOT)/lib
 
 htm:
 	mkdir -p html doctrees
-	PYTHONPATH=$(SPHINX_PYTHONPATH):${PYTHONPATH}; \
-	LD_LIBRARY_PATH=$(SPHINX_LD_LIBRARY_PATH):${LD_LIBRARY_PATH}; \
+	PYTHONPATH=$(SPHINX_PYTHONPATH):${PYTHONPATH} \
+	LD_LIBRARY_PATH=$(SPHINX_LD_LIBRARY_PATH):${LD_LIBRARY_PATH} \
 	$(SPHINXBUILD) -W -b html $(ALLSPHINXOPTS) html
 	@echo
 	@echo "Build finished. The HTML pages are in html."
 
 latex:
 	mkdir -p latex doctrees
-	PYTHONPATH=$(SPHINX_PYTHONPATH):${PYTHONPATH}; \
-	LD_LIBRARY_PATH=$(SPHINX_LD_LIBRARY_PATH):${LD_LIBRARY_PATH}; \
+	PYTHONPATH=$(SPHINX_PYTHONPATH):${PYTHONPATH} \
+	LD_LIBRARY_PATH=$(SPHINX_LD_LIBRARY_PATH):${LD_LIBRARY_PATH} \
 	$(SPHINXBUILD) -W -b latex $(ALLSPHINXOPTS) latex
 	@echo
 	@echo "Build finished; the LaTeX files are in latex."