diff --git a/XAlloc.c b/XAlloc.c
index c43eca76..20ddafc8 100644
--- a/XAlloc.c
+++ b/XAlloc.c
@@ -67,7 +67,7 @@ int xSnprintf(char* buf, int len, const char* fmt, ...) {
    return _n;
 }
 
-char* xStrdup_(const char* str) {
+char* xStrdup(const char* str) {
    char* data = strdup(str);
    if (!data) {
       fail();
diff --git a/XAlloc.h b/XAlloc.h
index 70dfc59f..32389e57 100644
--- a/XAlloc.h
+++ b/XAlloc.h
@@ -25,14 +25,6 @@ int xAsprintf(char **strp, const char* fmt, ...);
 ATTR_FORMAT(printf, 3, 4)
 int xSnprintf(char *buf, int len, const char* fmt, ...);
 
-#undef xStrdup
-#undef xStrdup_
-#ifdef NDEBUG
-# define xStrdup_ xStrdup
-#else
-# define xStrdup(str_) (assert(str_), xStrdup_(str_))
-#endif
-
-char* xStrdup_(const char* str) ATTR_NONNULL;
+char* xStrdup(const char* str) ATTR_NONNULL;
 
 #endif