diff --git a/src/backend/file/test/test-load-backend.c b/src/backend/file/test/test-load-backend.c
index fe4e2bd047..7655529111 100644
--- a/src/backend/file/test/test-load-backend.c
+++ b/src/backend/file/test/test-load-backend.c
@@ -36,7 +36,7 @@ int main (int argc, char ** argv)
     qof_init();
     cashobjects_register();
     do_test(
-        qof_load_backend_library ("../", GNC_LIB_NAME),
+        qof_load_backend_library ("../.libs/", GNC_LIB_NAME),
         " loading gnc-backend-file GModule failed");
     print_test_results();
     qof_close();
diff --git a/src/backend/file/test/test-load-xml2.c b/src/backend/file/test/test-load-xml2.c
index 50e2d710bc..a892bd80fd 100644
--- a/src/backend/file/test/test-load-xml2.c
+++ b/src/backend/file/test/test-load-xml2.c
@@ -111,7 +111,7 @@ main (int argc, char ** argv)
     g_type_init();
     qof_init();
     cashobjects_register();
-    do_test(qof_load_backend_library ("../", GNC_LIB_NAME),
+    do_test(qof_load_backend_library ("../.libs/", GNC_LIB_NAME),
             " loading gnc-backend-file GModule failed");
 
     if (!location)
diff --git a/src/backend/postgres/test/test-db.c b/src/backend/postgres/test/test-db.c
index 07f61a24b4..3aef568284 100644
--- a/src/backend/postgres/test/test-db.c
+++ b/src/backend/postgres/test/test-db.c
@@ -1094,7 +1094,7 @@ main (int argc, char **argv)
     DbInfo *dbinfo;
     
     qof_init();
-    do_test(qof_load_backend_library (QOF_LIB_DIR, PG_LIB_NAME),
+    do_test(qof_load_backend_library ("../.libs/", PG_LIB_NAME),
             " loading gnc-backend-postgres GModule failed");
 
     dbinfo = g_new0(DbInfo, 1);
diff --git a/src/backend/postgres/test/test-load-backend.c b/src/backend/postgres/test/test-load-backend.c
index 3c6053b839..2fabc54e79 100644
--- a/src/backend/postgres/test/test-load-backend.c
+++ b/src/backend/postgres/test/test-load-backend.c
@@ -37,7 +37,7 @@ int main (int argc, char ** argv)
 	cashobjects_register();
 	/* the test needs to run locally in case make install
 	 * has not yet been run. Use GNC_LIBDIR usually. */
-	do_test(qof_load_backend_library ("../", PG_LIB_NAME),
+	do_test(qof_load_backend_library ("../.libs/", PG_LIB_NAME),
 		" loading gnc-backend-postgres GModule failed");
 	print_test_results();
 	qof_close();
diff --git a/src/backend/postgres/test/test-period.c b/src/backend/postgres/test/test-period.c
index 4d7d087952..35faff67cb 100644
--- a/src/backend/postgres/test/test-period.c
+++ b/src/backend/postgres/test/test-period.c
@@ -34,7 +34,7 @@
 #include "test-engine-stuff.h"
 #include "Transaction.h"
 
-#define PG_LIB_NAME "libgnc-backend-postgres.la"
+#define PG_LIB_NAME "gnc-backend-postgres"
 
 static void
 run_test (void)
@@ -51,7 +51,7 @@ run_test (void)
   Timespec tsfirst, tslast, tsmiddle;
   char * test_url;
   
-  do_test(qof_load_backend_library (QOF_LIB_DIR, PG_LIB_NAME),
+  do_test(qof_load_backend_library ("../.libs/", PG_LIB_NAME),
           " loading gnc-backend-postgres GModule failed");
 
   session = get_random_session ();