diff --git a/Makefile.config.in b/Makefile.config.in
index 9ab1844e..679ff5d3 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -50,7 +50,7 @@ INSTALL_SCRIPT = @INSTALL_SCRIPT@
 
 host = @host@
 
-ASCIIDOC = @PYTHON@ $(top_srcdir)/doc/tools/asciidoc/asciidoc.py
+ASCIIDOC = @PYTHON3@ $(top_srcdir)/doc/tools/asciidoc/asciidoc.py
 ASCIIDOC_FLAGS = --unsafe
 AWK = @AWK@
 CATALOGS = @CATALOGS@
diff --git a/configure.ac b/configure.ac
index 9b2b2ae3..07152cf2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -77,8 +77,8 @@ CONFIG_XMLTO="no"
 CONFIG_JW="no"
 
 if test "x$CONFIG_DOC" != xno; then
-	AC_PATH_PROGS(PYTHON, "python")
-	if test "x$PYTHON" != "x"; then
+	AC_PATH_PROGS(PYTHON3, "python3")
+	if test "x$PYTHON3" != "x"; then
 		EL_CONFIG(CONFIG_ASCIIDOC, [AsciiDoc])
 		EL_CONFIG(MANUAL_ASCIIDOC, [HTML (one file)])
 		EL_CONFIG(MAN_ASCIIDOC, [HTML])