diff --git a/Cantera/fortran/f77demos/Makefile.in b/Cantera/fortran/f77demos/Makefile.in
index 51b9bed56..d231b6b38 100644
--- a/Cantera/fortran/f77demos/Makefile.in
+++ b/Cantera/fortran/f77demos/Makefile.in
@@ -19,7 +19,7 @@ FORT = @F77@
 FORT_FLAGS = @FFLAGS@ 
 
 # Fortran libraries
-FORT_LIBS = @FLIBS@
+FORT_LIBS = @LCXX_FLIBS@ @FLIBS@
 
 # the C++ compiler
 CXX = @CXX@
diff --git a/Cantera/fortran/f77demos/f77demos.mak.in b/Cantera/fortran/f77demos/f77demos.mak.in
index 15469db03..40248afae 100644
--- a/Cantera/fortran/f77demos/f77demos.mak.in
+++ b/Cantera/fortran/f77demos/f77demos.mak.in
@@ -19,10 +19,10 @@ LINK_OPTIONS =
 FORT = @F77@
 
 # Fortran compile flags  
-FORT_FLAGS = @FFLAGS@ 
+FORT_FLAGS =  @FFLAGS@ 
 
 # Fortran libraries
-FORT_LIBS = @FLIBS@
+FORT_LIBS =  @LCXX_FLIBS@ @FLIBS@
 
 # the C++ compiler
 CXX = @CXX@