diff --git a/src/charon/plugins/eap_aka/Makefile.am b/src/charon/plugins/eap_aka/Makefile.am
index 4d0385b5b..e007f5f00 100644
--- a/src/charon/plugins/eap_aka/Makefile.am
+++ b/src/charon/plugins/eap_aka/Makefile.am
@@ -9,6 +9,6 @@ plugin_LTLIBRARIES = libstrongswan-eap-aka.la
 libstrongswan_eap_aka_la_SOURCES = eap_aka_plugin.h eap_aka_plugin.c \
   eap_aka_peer.h eap_aka_peer.c \
   eap_aka_server.h eap_aka_server.c
-libstrongswan_eap_aka_la_LIBADD = $(top_builddir)/src/libsimaka/libsimaka.a
+libstrongswan_eap_aka_la_LIBADD = $(top_builddir)/src/libsimaka/libsimaka.la
 libstrongswan_eap_aka_la_LDFLAGS = -module -avoid-version
 
diff --git a/src/charon/plugins/eap_sim/Makefile.am b/src/charon/plugins/eap_sim/Makefile.am
index d7bc9cade..74b9bb4e8 100644
--- a/src/charon/plugins/eap_sim/Makefile.am
+++ b/src/charon/plugins/eap_sim/Makefile.am
@@ -9,6 +9,6 @@ plugin_LTLIBRARIES = libstrongswan-eap-sim.la
 libstrongswan_eap_sim_la_SOURCES = eap_sim_plugin.h eap_sim_plugin.c \
   eap_sim_peer.h eap_sim_peer.c \
   eap_sim_server.h eap_sim_server.c
-libstrongswan_eap_sim_la_LIBADD = $(top_builddir)/src/libsimaka/libsimaka.a
+libstrongswan_eap_sim_la_LIBADD = $(top_builddir)/src/libsimaka/libsimaka.la
 libstrongswan_eap_sim_la_LDFLAGS = -module -avoid-version
 
diff --git a/src/libsimaka/Makefile.am b/src/libsimaka/Makefile.am
index eb77693f8..f64e4dba3 100644
--- a/src/libsimaka/Makefile.am
+++ b/src/libsimaka/Makefile.am
@@ -1,7 +1,6 @@
 
 INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/charon
 
-noinst_LIBRARIES = libsimaka.a
-libsimaka_a_SOURCES = simaka_message.h simaka_message.c \
+noinst_LTLIBRARIES = libsimaka.la
+libsimaka_la_SOURCES = simaka_message.h simaka_message.c \
   simaka_crypto.h simaka_crypto.c
-