diff --git a/configure b/configure
index a9a4249..c27c4d6 100755
--- a/configure
+++ b/configure
@@ -4580,8 +4580,6 @@
 fi
 if have_backend "simple"; then
   echo "CONFIG_TRACE_SIMPLE=y" >> $config_host_mak
-  # Set the appropriate trace file.
-  trace_file="\"$trace_file-\" FMT_pid"
 fi
 if have_backend "log"; then
   echo "CONFIG_TRACE_LOG=y" >> $config_host_mak
diff --git a/meson.build b/meson.build
index a3424bc..5418083 100644
--- a/meson.build
+++ b/meson.build
@@ -1571,7 +1571,7 @@
 
 ignored = ['CONFIG_QEMU_INTERP_PREFIX'] # actually per-target
 arrays = ['CONFIG_BDRV_RW_WHITELIST', 'CONFIG_BDRV_RO_WHITELIST']
-strings = ['HOST_DSOSUF', 'CONFIG_IASL']
+strings = ['HOST_DSOSUF', 'CONFIG_IASL', 'CONFIG_TRACE_FILE']
 foreach k, v: config_host
   if ignored.contains(k)
     # do nothing
diff --git a/trace/simple.c b/trace/simple.c
index ac499ed..18af590 100644
--- a/trace/simple.c
+++ b/trace/simple.c
@@ -364,7 +364,7 @@
 
     if (!file) {
         /* Type cast needed for Windows where getpid() returns an int. */
-        trace_file_name = g_strdup_printf(CONFIG_TRACE_FILE, (pid_t)getpid());
+        trace_file_name = g_strdup_printf(CONFIG_TRACE_FILE "-" FMT_pid, (pid_t)getpid());
     } else {
         trace_file_name = g_strdup_printf("%s", file);
     }