diff --git a/ChangeLog.d/fix-linux-builds-in-conda-forge.txt b/ChangeLog.d/fix-linux-builds-in-conda-forge.txt
new file mode 100644
index 0000000000..5cfee855aa
--- /dev/null
+++ b/ChangeLog.d/fix-linux-builds-in-conda-forge.txt
@@ -0,0 +1,2 @@
+Bugfix
+   * Fix build failure in conda-forge.  Fixes #8422.
diff --git a/library/platform_util.c b/library/platform_util.c
index 09216edfbc..fdafa1fc66 100644
--- a/library/platform_util.c
+++ b/library/platform_util.c
@@ -265,7 +265,7 @@ mbedtls_ms_time_t mbedtls_ms_time(void)
     struct timespec tv;
     mbedtls_ms_time_t current_ms;
 
-#if defined(__linux__)
+#if defined(__linux__) && defined(CLOCK_BOOTTIME)
     ret = clock_gettime(CLOCK_BOOTTIME, &tv);
 #else
     ret = clock_gettime(CLOCK_MONOTONIC, &tv);