diff --git a/acinclude.m4 b/acinclude.m4
index dbe4810c4f..e41f70a4b0 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1816,14 +1816,19 @@ AC_DEFUN([AC_WIRESHARK_PYTHON_CHECK],
     AC_CHECK_PROG([ac_ws_python_config], python-config, "yes", "no")
     if test "x$ac_ws_python_config" = "xno"; then
       ac_cv_wireshark_python_devel=no
-	if test "x$want_python" = "xyes"
-	then
-	    #
-	    # The user tried to force us to use Python, but we
-	    # couldn't find the python-config tool; report an error.
-	    #
-	    AC_MSG_ERROR("python-config not found")
-	fi
+        if test "x$want_python" = "xyes"
+        then
+            #
+            # The user tried to force us to use Python, but we
+            # couldn't find the python-config tool; report an error.
+            #
+            AC_MSG_ERROR("python-config not found")
+        fi
+        #
+        # Set want_python to no, so we report that we aren't using
+        # the Python interpreter.
+        #
+        want_python=no
     else
       AC_MSG_CHECKING([python devel])
       ac_save_ws_cflags=$CFLAGS
@@ -1858,20 +1863,20 @@ AC_DEFUN([AC_WIRESHARK_PYTHON_CHECK],
           ac_cv_wireshark_python_devel=no
           CFLAGS=$ac_save_ws_cflags
           LIBS=$ac_save_ws_libs
-	  if test "x$want_python" = "xyes"
-	  then
-	    #
-	    # The user tried to force us to use Python, but we
-	    # couldn't compile the test program; report an error.
-	    #
-	    AC_MSG_ERROR("Python test program failed compilation")
-	  fi
+          if test "x$want_python" = "xyes"
+          then
+            #
+            # The user tried to force us to use Python, but we
+            # couldn't compile the test program; report an error.
+            #
+            AC_MSG_ERROR("Python test program failed compilation")
+          fi
           AC_MSG_RESULT([no])
           #
-          # Set want_zlib to no, so we report that we aren't using
+          # Set want_python to no, so we report that we aren't using
           # the Python interpreter.
           #
-	  want_zlib=no
+          want_python=no
         ])
     fi
 #    ])