diff --git a/resolve/SystemSolver.cpp b/resolve/SystemSolver.cpp
index 1e189031..381ee3cd 100644
--- a/resolve/SystemSolver.cpp
+++ b/resolve/SystemSolver.cpp
@@ -763,6 +763,8 @@ namespace ReSolve
       gs_ = new GramSchmidt(vectorHandler_, GramSchmidt::mgs_two_synch);
     } else if (gsMethod == "mgs_pm") {
       gs_ = new GramSchmidt(vectorHandler_, GramSchmidt::mgs_pm);
+    } else if (gsMethod == "cgs1") {
+      gs_ = new GramSchmidt(vectorHandler_, GramSchmidt::cgs1);
     } else {
       out::warning() << "Gram-Schmidt variant " << gsMethod_ << " not recognized.\n";
       out::warning() << "Using default cgs2 Gram-Schmidt variant.\n";
diff --git a/tests/functionality/CMakeLists.txt b/tests/functionality/CMakeLists.txt
index ceb36179..6c98e6ea 100644
--- a/tests/functionality/CMakeLists.txt
+++ b/tests/functionality/CMakeLists.txt
@@ -108,14 +108,17 @@ if(RESOLVE_USE_KLU)
 endif()
 
 # Krylov solvers tests
+#add_test(NAME sys_rand_count_gmres_cgs1_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>     "-i" "randgmres" "-g" "cgs1" "-s" "count")
 add_test(NAME sys_rand_count_gmres_cgs2_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>     "-i" "randgmres" "-g" "cgs2" "-s" "count")
 add_test(NAME sys_rand_count_gmres_mgs_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>      "-i" "randgmres" "-g" "mgs" "-s" "count")
 add_test(NAME sys_rand_count_gmres_mgs2sync_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe> "-i" "randgmres" "-g" "mgs_two_synch" "-s" "count")
 add_test(NAME sys_rand_count_gmres_mgspm_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>    "-i" "randgmres" "-g" "mgs_pm" "-s" "count")
+#add_test(NAME sys_rand_fwht_gmres_cgs1_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>      "-i" "randgmres" "-g" "cgs1" "-s" "fwht")
 add_test(NAME sys_rand_fwht_gmres_cgs2_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>      "-i" "randgmres" "-g" "cgs2" "-s" "fwht")
 add_test(NAME sys_rand_fwht_gmres_mgs_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>       "-i" "randgmres" "-g" "mgs" "-s" "fwht")
 add_test(NAME sys_rand_fwht_gmres_mgs2sync_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>  "-i" "randgmres" "-g" "mgs_two_synch" "-s" "fwht")
 add_test(NAME sys_rand_fwht_gmres_mgspm_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>     "-i" "randgmres" "-g" "mgs_pm" "-s" "fwht")
+#add_test(NAME sys_fgmres_cgs1_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>      "-i" "fgmres" "-g" "cgs1")
 add_test(NAME sys_fgmres_cgs2_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>      "-i" "fgmres" "-g" "cgs2")
 add_test(NAME sys_fgmres_mgs_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>       "-i" "fgmres" "-g" "mgs")
 add_test(NAME sys_fgmres_mgs2sync_test COMMAND $<TARGET_FILE:sys_rand_gmres_test.exe>  "-i" "fgmres" "-g" "mgs_two_synch")