diff --git a/plug-ins/flame/Makefile.am b/plug-ins/flame/Makefile.am
index 405117b9e1..2c2c4bfee5 100644
--- a/plug-ins/flame/Makefile.am
+++ b/plug-ins/flame/Makefile.am
@@ -1,16 +1,18 @@
 ## Process this file with automake to produce Makefile.in
 
+if OS_WIN32
+mwindows = -mwindows
+else
+libm = -lm
+endif
+
 libgimpui = $(top_builddir)/libgimp/libgimpui-$(GIMP_API_VERSION).la
 libgimpconfig = $(top_builddir)/libgimpconfig/libgimpconfig-$(GIMP_API_VERSION).la
 libgimpwidgets = $(top_builddir)/libgimpwidgets/libgimpwidgets-$(GIMP_API_VERSION).la
 libgimp = $(top_builddir)/libgimp/libgimp-$(GIMP_API_VERSION).la
 libgimpcolor = $(top_builddir)/libgimpcolor/libgimpcolor-$(GIMP_API_VERSION).la
 libgimpbase = $(top_builddir)/libgimpbase/libgimpbase-$(GIMP_API_VERSION).la
-libgimpmath = $(top_builddir)/libgimpmath/libgimpmath-$(GIMP_API_VERSION).la
-
-if OS_WIN32
-mwindows = -mwindows
-endif
+libgimpmath = $(top_builddir)/libgimpmath/libgimpmath-$(GIMP_API_VERSION).la $(libm)
 
 if HAVE_WINDRES
 include $(top_srcdir)/build/windows/gimprc-plug-ins.rule