diff --git a/src/libsysprof-capture/sysprof-capture-writer.c b/src/libsysprof-capture/sysprof-capture-writer.c
index ca3dd56c..7926e6a4 100644
--- a/src/libsysprof-capture/sysprof-capture-writer.c
+++ b/src/libsysprof-capture/sysprof-capture-writer.c
@@ -1361,7 +1361,7 @@ sysprof_capture_writer_new_from_env (size_t buffer_size)
   const char *fdstr;
   int fd;
 
-  if (!(fdstr = g_getenv ("SYSPROF_TRACE_FD")))
+  if (!(fdstr = getenv ("SYSPROF_TRACE_FD")))
     return NULL;
 
   /* Make sure the clock is initialized */
diff --git a/src/libsysprof-capture/sysprof-collector.c b/src/libsysprof-capture/sysprof-collector.c
index 2b7ffec7..c00765b3 100644
--- a/src/libsysprof-capture/sysprof-collector.c
+++ b/src/libsysprof-capture/sysprof-collector.c
@@ -131,13 +131,13 @@ request_writer (void)
 
   if (conn == NULL)
     {
-      const char *fdstr = g_getenv ("SYSPROF_CONTROL_FD");
+      const char *fdstr = getenv ("SYSPROF_CONTROL_FD");
       int peer_fd = -1;
 
       if (fdstr != NULL)
         peer_fd = atoi (fdstr);
 
-      g_unsetenv ("SYSPROF_CONTROL_FD");
+      unsetenv ("SYSPROF_CONTROL_FD");
 
       if (peer_fd > 0)
         {
@@ -251,7 +251,7 @@ sysprof_collector_get (void)
     self->tid = self->pid;
 #endif
 
-    if (g_getenv ("SYSPROF_CONTROL_FD") != NULL)
+    if (getenv ("SYSPROF_CONTROL_FD") != NULL)
       self->buffer = request_writer ();
 
     if (self->is_shared)