diff --git a/c/lib/mlr_arch.c b/c/lib/mlr_arch.c
index ee50a490d..63993472f 100644
--- a/c/lib/mlr_arch.c
+++ b/c/lib/mlr_arch.c
@@ -6,6 +6,9 @@
 #include "mlrutil.h"
 #include "netbsd_strptime.h"
 
+// For some Linux distros, in spite of including time.h:
+char *strptime(const char *s, const char *format, struct tm *ptm);
+
 // ----------------------------------------------------------------
 int mlr_arch_setenv(const char *name, const char *value) {
 #ifdef MLR_ON_MSYS2
@@ -29,8 +32,8 @@ int mlr_arch_unsetenv(const char *name) {
 // ----------------------------------------------------------------
 char *mlr_arch_strptime(const char *s, const char *format, struct tm *ptm) {
 #ifdef MLR_ON_MSYS2
-	return strptime(*s, format, ptm);
-#else
 	return netbsd_strptime(s, format, ptm);
+#else
+	return strptime(s, format, ptm);
 #endif
 }