diff --git a/CRT.c b/CRT.c
index 5d617215b..a60857a17 100644
--- a/CRT.c
+++ b/CRT.c
@@ -1260,8 +1260,8 @@ static void print_backtrace(void) {
 #elif defined(HAVE_EXECINFO_H)
    void* backtraceArray[256];
 
-   size_t size = backtrace(backtraceArray, ARRAYSIZE(backtraceArray));
-   backtrace_symbols_fd(backtraceArray, size, STDERR_FILENO);
+   int nptrs = backtrace(backtraceArray, ARRAYSIZE(backtraceArray));
+   backtrace_symbols_fd(backtraceArray, nptrs, STDERR_FILENO);
 #else
 #error No implementation for print_backtrace()!
 #endif