diff --git a/src/FDM/YASim/Makefile.am b/src/FDM/YASim/Makefile.am
index 3d3e4ba51..fb4afa076 100644
--- a/src/FDM/YASim/Makefile.am
+++ b/src/FDM/YASim/Makefile.am
@@ -23,7 +23,7 @@ SHARED_SOURCE_FILES = \
         Model.cpp Model.hpp \
         PropEngine.cpp PropEngine.hpp \
         Propeller.cpp Propeller.hpp \
-	Engine.hpp \
+        Engine.hpp \
         PistonEngine.cpp PistonEngine.hpp \
         TurbineEngine.cpp TurbineEngine.hpp \
         RigidBody.cpp RigidBody.hpp \
@@ -45,9 +45,9 @@ noinst_PROGRAMS = proptest
 
 yasim_SOURCES = yasim-test.cpp $(SHARED_SOURCE_FILES)
 
-yasim_LDADD = -lsgxml -lsgprops -lsgdebug -lsgmisc -lsgstructure -lplibul -lplibsg $(opengl_LIBS) $(base_LIBS)
+yasim_LDADD = -lsgxml -lsgprops -lsgdebug -lsgmisc -lsgstructure $(base_LIBS)
 
 proptest_SOURCES = proptest.cpp $(SHARED_SOURCE_FILES)
-proptest_LDADD = -lsgxml -lsgprops -lsgdebug -lsgmisc -lsgstructure -lplibul -lplibsg $(opengl_LIBS) $(base_LIBS)
+proptest_LDADD = -lsgxml -lsgprops -lsgdebug -lsgmisc -lsgstructure $(base_LIBS)
 
 INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/src