diff --git a/src/coreclr/scripts/superpmi.py b/src/coreclr/scripts/superpmi.py
index 993032200e174..4c50031bc9007 100644
--- a/src/coreclr/scripts/superpmi.py
+++ b/src/coreclr/scripts/superpmi.py
@@ -341,7 +341,7 @@ def add_core_root_arguments(parser, build_type_default, build_type_help):
 asm_diff_parser.add_argument("--gcinfo", action="store_true", help="Include GC info in disassembly (sets DOTNET_JitGCDump; requires instructions to be prefixed by offsets).")
 asm_diff_parser.add_argument("--debuginfo", action="store_true", help="Include debug info after disassembly (sets DOTNET_JitDebugDump).")
 asm_diff_parser.add_argument("-tag", help="Specify a word to add to the directory name where the asm diffs will be placed")
-asm_diff_parser.add_argument("-metrics", action="append", help="Metrics option to pass to jit-analyze. Can be specified multiple times, or pass comma-separated values.")
+asm_diff_parser.add_argument("-metrics", action="append", help="Metrics option to pass to jit-analyze. Can be specified multiple times, one for each metric.")
 asm_diff_parser.add_argument("--diff_with_release", action="store_true", help="Specify if this is asmdiff using release binaries.")
 asm_diff_parser.add_argument("--git_diff", action="store_true", help="Produce a '.diff' file from 'base' and 'diff' folders if there were any differences.")
 
@@ -1788,7 +1788,8 @@ def create_exception():
                                 jit_analyze_summary_file = os.path.join(asm_root_dir, "summary.md")
                                 command = [ jit_analyze_path, "--md", jit_analyze_summary_file, "-r", "--base", base_asm_location, "--diff", diff_asm_location ]
                                 if self.coreclr_args.metrics:
-                                    command += [ "--metrics", ",".join(self.coreclr_args.metrics) ]
+                                    for metric in self.coreclr_args.metrics:
+                                        command += [ "--metrics", metric ]
                                 elif base_bytes is not None and diff_bytes is not None:
                                     command += [ "--override-total-base-metric", str(base_bytes), "--override-total-diff-metric", str(diff_bytes) ]