diff --git a/src/alloc-override.c b/src/alloc-override.c
index 7cf0bf2c..b2c94ce2 100644
--- a/src/alloc-override.c
+++ b/src/alloc-override.c
@@ -77,7 +77,9 @@ typedef struct mi_nothrow_s { int _tag; } mi_nothrow_t;
     MI_INTERPOSE_MI(calloc),
     MI_INTERPOSE_MI(realloc),
     MI_INTERPOSE_MI(strdup),
+    #if defined(MAC_OS_X_VERSION_10_7) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7
     MI_INTERPOSE_MI(strndup),
+    #endif
     MI_INTERPOSE_MI(realpath),
     MI_INTERPOSE_MI(posix_memalign),
     MI_INTERPOSE_MI(reallocf),