diff --git a/polymer/eduke32/build/include/compat.h b/polymer/eduke32/build/include/compat.h
index 48f2e7a36..945c309ed 100644
--- a/polymer/eduke32/build/include/compat.h
+++ b/polymer/eduke32/build/include/compat.h
@@ -443,6 +443,7 @@ static inline uint16_t system_15bit_rand(void) { return ((uint16_t)rand())&0x7ff
 #endif
 
 #ifdef __compat_h_macrodef__
+# define Bassert assert
 # define Brand rand
 # define Balloca alloca
 # ifdef NEDMALLOC
@@ -550,6 +551,7 @@ static inline uint16_t system_15bit_rand(void) { return ((uint16_t)rand())&0x7ff
 
 #else
 
+void Bassert(int);
 int32_t Brand(void);
 void *Bmalloc(bsize_t size);
 void Bfree(void *ptr);
diff --git a/polymer/eduke32/build/src/compat.c b/polymer/eduke32/build/src/compat.c
index 90205f060..1987bf8c6 100644
--- a/polymer/eduke32/build/src/compat.c
+++ b/polymer/eduke32/build/src/compat.c
@@ -47,6 +47,11 @@
 
 #ifndef __compat_h_macrodef__
 
+void Bassert(int expr)
+{
+    assert(expr);
+}
+
 int32_t Brand(void)
 {
     return rand();