diff --git a/configure.in b/configure.in
index 0566a688..aba03541 100644
--- a/configure.in
+++ b/configure.in
@@ -30,6 +30,7 @@ dnl information on the package
 dnl checks for programs
 AC_PROG_CXX
 AC_PROG_RANLIB
+AC_CHECK_PROG(HAVE_DOT, dot, YES, NO)
 
 dnl do checks using C++
 AC_LANG_CPLUSPLUS
diff --git a/doc/doxygen.cfg.in b/doc/doxygen.cfg.in
index b950205a..30ce8fa3 100644
--- a/doc/doxygen.cfg.in
+++ b/doc/doxygen.cfg.in
@@ -768,7 +768,7 @@ CLASS_DIAGRAMS         = NO
 # toolkit from AT&T and Lucent Bell Labs. The other options in this section 
 # have no effect if this option is set to NO (the default)
 
-HAVE_DOT               = YES
+HAVE_DOT               = @HAVE_DOT@
 
 # If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen 
 # will generate a graph for each documented class showing the direct and