diff --git a/Makefile.in b/Makefile.in
index 7aad2bd..d3c49ba 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -96,8 +96,8 @@ WARNINGS	=	@WARNINGS@
 # Linker options...
 #
 
-DSOFLAGS	=	@DSOFLAGS@
-LDFLAGS		=	@LDFLAGS@
+DSOFLAGS	=	@DSOFLAGS@ $(OPTIM)
+LDFLAGS		=	@LDFLAGS@ $(OPTIM)
 LIBS		=	@LIBS@ -lm