diff --git a/include/astaroth.h b/include/astaroth.h
index f7109ae..af03634 100644
--- a/include/astaroth.h
+++ b/include/astaroth.h
@@ -116,12 +116,12 @@ typedef enum {
 
 #define _UNUSED __attribute__((unused)) // Does not give a warning if unused
 #define AC_GEN_STR(X) #X,
-static const char* intparam_names[] _UNUSED    = {AC_FOR_USER_INT_PARAM_TYPES(AC_GEN_STR)};
-static const char* int3param_names[] _UNUSED   = {AC_FOR_USER_INT3_PARAM_TYPES(AC_GEN_STR)};
-static const char* realparam_names[] _UNUSED   = {AC_FOR_USER_REAL_PARAM_TYPES(AC_GEN_STR)};
-static const char* real3param_names[] _UNUSED  = {AC_FOR_USER_REAL3_PARAM_TYPES(AC_GEN_STR)};
-static const char* scalararray_names[] _UNUSED = {AC_FOR_SCALARARRAY_HANDLES(AC_GEN_STR)};
-static const char* vtxbuf_names[] _UNUSED      = {AC_FOR_VTXBUF_HANDLES(AC_GEN_STR)};
+static const char* intparam_names[] _UNUSED    = {AC_FOR_USER_INT_PARAM_TYPES(AC_GEN_STR) "-end-"};
+static const char* int3param_names[] _UNUSED   = {AC_FOR_USER_INT3_PARAM_TYPES(AC_GEN_STR) "-end-"};
+static const char* realparam_names[] _UNUSED   = {AC_FOR_USER_REAL_PARAM_TYPES(AC_GEN_STR) "-end-"};
+static const char* real3param_names[] _UNUSED  = {AC_FOR_USER_REAL3_PARAM_TYPES(AC_GEN_STR) "-end-"};
+static const char* scalararray_names[] _UNUSED = {AC_FOR_SCALARARRAY_HANDLES(AC_GEN_STR) "-end-"};
+static const char* vtxbuf_names[] _UNUSED      = {AC_FOR_VTXBUF_HANDLES(AC_GEN_STR) "-end-"};
 #undef AC_GEN_STR
 #undef _UNUSED