diff --git a/install.sh b/install.sh
index 9e66a31a..518123da 100755
--- a/install.sh
+++ b/install.sh
@@ -374,6 +374,16 @@ nvm_detect_profile() {
   fi
 }
 
+nvm_is_wsl() {
+  if [ -e /proc/sys/fs/binfmt_misc/WSLInterop ] || [ -e /proc/sys/fs/binfmt_misc/WSLInterop-late ]; then
+    return 0
+  fi
+  case "$(command uname -r 2>/dev/null)" in
+    *[Mm]icrosoft*) return 0 ;;
+  esac
+  return 1
+}
+
 #
 # Check whether the user has any globally-installed npm modules in their system
 # Node, and warn them if so.
@@ -383,6 +393,11 @@ nvm_check_global_modules() {
   NPM_COMMAND="$(command -v npm 2>/dev/null)" || return 0
   [ -n "${NVM_DIR}" ] && [ -z "${NPM_COMMAND%%"$NVM_DIR"/*}" ] && return 0
 
+  # under WSL, a Windows npm (with its `npm.cmd` beside it) is not a system node that nvm would shadow
+  case "${NPM_COMMAND}" in
+    */*) nvm_is_wsl && [ -f "${NPM_COMMAND%/*}/npm.cmd" ] && return 0 ;;
+  esac
+
   local NPM_VERSION
   NPM_VERSION="$(npm --version)"
   NPM_VERSION="${NPM_VERSION:--1}"
@@ -552,7 +567,7 @@ nvm_do_install() {
 nvm_reset() {
   unset -f nvm_has nvm_has_executable nvm_install_dir nvm_latest_version nvm_profile_is_bash_or_zsh \
     nvm_source nvm_node_version nvm_download install_nvm_from_git nvm_install_node \
-    install_nvm_as_script nvm_try_profile nvm_detect_profile nvm_check_global_modules \
+    install_nvm_as_script nvm_try_profile nvm_detect_profile nvm_is_wsl nvm_check_global_modules \
     nvm_do_install nvm_reset nvm_default_install_dir nvm_grep
 }
 
diff --git a/test/install_script/nvm_check_global_modules b/test/install_script/nvm_check_global_modules
index 8c3072f9..3a63cbe2 100755
--- a/test/install_script/nvm_check_global_modules
+++ b/test/install_script/nvm_check_global_modules
@@ -5,11 +5,12 @@ cleanup () {
   unset npm_config_prefix
 
   rm -f npm
+  [ -z "${WINDOWS_NPM_DIR-}" ] || rm -rf "${WINDOWS_NPM_DIR}"
   PATH="$ORIGINAL_PATH"
   NVM_DIR="$ORIGINAL_NVM_DIR"
 
   unset -f setup cleanup die
-  unset message ORIGINAL_PATH ORIGINAL_NVM_DIR
+  unset message ORIGINAL_PATH ORIGINAL_NVM_DIR WINDOWS_NPM_DIR
 }
 die () { echo "$@" ; cleanup ; exit 1; }
 
@@ -61,5 +62,26 @@ chmod +x npm
 message=$(nvm_check_global_modules)
 [ -z "$message" ] || die "nvm_check_global_modules should have not printed a notice when npm was unavailable; got:\n${message}"
 
+# Faking a Windows Node's npm, with a global module installed
+WINDOWS_NPM_DIR="$(mktemp -d)"
+cat <<'SH' >"${WINDOWS_NPM_DIR}/npm"
+#!/bin/sh
+case "$1" in
+  --version) echo '10.0.0' ;;
+  list) printf '%s\n' 'npm@10.0.0' '└── windows-global@1.0.0' ;;
+esac
+SH
+touch "${WINDOWS_NPM_DIR}/npm.cmd"
+chmod +x "${WINDOWS_NPM_DIR}/npm"
+PATH="${WINDOWS_NPM_DIR}:${ORIGINAL_PATH}"
+
+nvm_is_wsl() { return 0; }
+message=$(nvm_check_global_modules)
+[ -z "$message" ] || die "nvm_check_global_modules should not run a Windows npm under WSL; got:\n${message}"
+
+nvm_is_wsl() { return 1; }
+message=$(nvm_check_global_modules)
+[ -n "$message" ] || die 'nvm_check_global_modules should still warn about a Windows npm outside WSL, where it is the system node'
+
 
 cleanup
diff --git a/test/install_script/nvm_is_wsl b/test/install_script/nvm_is_wsl
new file mode 100755
index 00000000..15a5f14d
--- /dev/null
+++ b/test/install_script/nvm_is_wsl
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+cleanup () {
+  rm -rf "${FAKE_BIN_DIR}"
+  PATH="$ORIGINAL_PATH"
+  unset -f cleanup die fake_uname
+  unset ORIGINAL_PATH FAKE_BIN_DIR
+}
+die () { echo "$@" ; cleanup ; exit 1; }
+
+NVM_ENV=testing \. ../../install.sh
+
+ORIGINAL_PATH="$PATH"
+FAKE_BIN_DIR="$(mktemp -d)"
+PATH="${FAKE_BIN_DIR}:${PATH}"
+
+fake_uname() {
+  printf '#!/bin/sh\necho %s\n' "$1" > "${FAKE_BIN_DIR}/uname"
+  chmod +x "${FAKE_BIN_DIR}/uname"
+}
+
+type nvm_is_wsl > /dev/null 2>&1 || die 'nvm_is_wsl is not available'
+
+fake_uname '6.6.87.2-microsoft-standard-WSL2'
+nvm_is_wsl || die 'a WSL2 kernel release should be detected as WSL'
+
+fake_uname '4.4.0-19041-Microsoft'
+nvm_is_wsl || die 'a WSL1 kernel release should be detected as WSL'
+
+if [ -e /proc/sys/fs/binfmt_misc/WSLInterop ] || [ -e /proc/sys/fs/binfmt_misc/WSLInterop-late ]; then
+  echo 'skipping the non-WSL checks: this machine has a WSL interop entry'
+else
+  fake_uname '6.8.0-45-generic'
+  ! nvm_is_wsl || die 'a non-WSL kernel release should not be detected as WSL'
+
+  fake_uname '24.5.0'
+  ! nvm_is_wsl || die 'a macOS kernel release should not be detected as WSL'
+fi
+
+cleanup