diff --git a/binr/rules.mk b/binr/rules.mk
index 82a6748c7f..b0edfee39d 100644
--- a/binr/rules.mk
+++ b/binr/rules.mk
@@ -13,7 +13,9 @@ LDFLAGS+=-lm
 else
 ifneq (${OSTYPE},linux)
 LDFLAGS+=-lpthread
+ifeq (${OSTYPE},freebsd)
 LDFLAGS+=-ldl
+endif
 LDFLAGS+=-lm
 endif
 endif
diff --git a/libr/include/r_io.h b/libr/include/r_io.h
index 7fc205d05e..b0a2f9a405 100644
--- a/libr/include/r_io.h
+++ b/libr/include/r_io.h
@@ -52,6 +52,10 @@ typedef void * r_ptrace_data_t;
 #elif __APPLE__
 typedef int r_ptrace_request_t;
 typedef int r_ptrace_data_t;
+#elif __OpenBSD__
+typedef int r_ptrace_request_t;
+typedef int r_ptrace_data_t;
+#define R_PTRACE_NODATA 0
 #else
 typedef int r_ptrace_request_t;
 typedef void *r_ptrace_data_t;