diff --git a/deps/librinterface.c b/deps/librinterface.c
index 80d3d4b..980ce2f 100644
--- a/deps/librinterface.c
+++ b/deps/librinterface.c
@@ -1,5 +1,6 @@
 /* Copyright - 2012 - Laurent Gautier */
 #include <stdlib.h>
+#include <stdbool.h>
 #include <strings.h>
 #include <R.h>
 #include <Rinternals.h>
@@ -768,7 +769,7 @@ SexpIntVector_ptr(SEXP sexp) {
 
 /* Return NULL on failure */
 SEXP
-SexpBoolVector_new(int *v, int n) {
+SexpBoolVector_new(bool *v, int n) {
   RINTERF_NEWVECTOR(LOGICAL_POINTER, NEW_LOGICAL(n), int)
 }
 
@@ -778,7 +779,7 @@ SexpBoolVector_new_nofill(int n) {
 }
 
 SEXP
-SexpBoolVectorMatrix_new(int *v, int nx, int ny) {
+SexpBoolVectorMatrix_new(bool *v, int nx, int ny) {
   int n = nx * ny;
   RINTERF_NEWVECTOR(LOGICAL_POINTER, allocMatrix(LGLSXP, nx, ny), int)
 }