diff --git a/vcs/defs.bzl b/vcs/defs.bzl
index d4e969ff..aabe30bf 100644
--- a/vcs/defs.bzl
+++ b/vcs/defs.bzl
@@ -144,7 +144,7 @@ def _vcs_run(ctx):
     # Waveform
     if ctx.attr.trace:
         trace_file = ctx.actions.declare_file("{}.vcd".format(ctx.label.name))
-        args.extend(["+vcd="+trace_file.path])
+        args.extend(["+vcd=" + trace_file.path])
         args.append("+vcs+dumpon+0+0")
         args.append("+vcs+dumparrays")
         outputs.append(trace_file)
diff --git a/vcs/tests/BUILD b/vcs/tests/BUILD
index d333efee..bc9d75a1 100644
--- a/vcs/tests/BUILD
+++ b/vcs/tests/BUILD
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("@rules_cc//cc:defs.bzl", "cc_test")
 load("//vcs:defs.bzl", "vcs_binary", "vcs_run")
 load("//verilog:defs.bzl", "verilog_library")
 
@@ -28,7 +27,6 @@ verilog_library(
     ],
 )
 
-
 verilog_library(
     name = "tb",
     srcs = [
@@ -41,7 +39,6 @@ verilog_library(
 
 vcs_binary(
     name = "tb_vcs",
-    vcs_env = "//vcs/tests:vcs_env.sh",
     module = ":tb",
     module_top = "tb",
     opts = [
@@ -49,6 +46,7 @@ vcs_binary(
         "+vcs+lic+wait",
         "+error+500",
     ],
+    vcs_env = "//vcs/tests:vcs_env.sh",
     visibility = [
         "//visibility:public",
     ],