diff --git a/src/baseven.c b/src/baseven.c
index acd89bb..fb6dcb3 100644
--- a/src/baseven.c
+++ b/src/baseven.c
@@ -42,11 +42,8 @@ static uint8_t corelibs_baseven_bits_nth (uint8_t, uint8_t);
 enum { // Avoid collision in error numbers
 	CORELIBS_BASEVEN_ERR_OK = 0,
 	CORELIBS_BASEVEN_ERR_UNKOWN,
-	CORELIBS_BASEVEN_ERR_MEM_ALLOC,
 	CORELIBS_BASEVEN_ERR_MEM_OVERFLOW,
-	CORELIBS_BASEVEN_ERR_VAR_NCOMPAT,
 	CORELIBS_BASEVEN_ERR_VAR_INVAL,
-	CORELIBS_BASEVEN_ERR_VAR_UNDEF,
 };
 
 const struct corelibs_baseven_interface cl_baseven = {
@@ -60,13 +57,10 @@ const struct corelibs_baseven_interface cl_baseven = {
     .ok      = CORELIBS_BASEVEN_ERR_OK,
     .unknown = CORELIBS_BASEVEN_ERR_UNKOWN,
     .mem     = {
-      .alloc    = CORELIBS_BASEVEN_ERR_MEM_ALLOC,
       .overflow = CORELIBS_BASEVEN_ERR_MEM_OVERFLOW,
     },
     .var = {
-      .undef   = CORELIBS_BASEVEN_ERR_VAR_UNDEF,
-      .inval   = CORELIBS_BASEVEN_ERR_VAR_INVAL,
-      .ncompat = CORELIBS_BASEVEN_ERR_VAR_NCOMPAT,
+      .inval = CORELIBS_BASEVEN_ERR_VAR_INVAL,
     },
   },
 };
diff --git a/src/baseven.h b/src/baseven.h
index c245284..01fc9a9 100644
--- a/src/baseven.h
+++ b/src/baseven.h
@@ -43,14 +43,11 @@ struct corelibs_baseven_interface {
 		  unknown;               // Unknown error
 
 		const struct {
-			const cl_baseven_err alloc, // Memory allocation failed
-			  overflow;                 // Not enough memory to run
+			const cl_baseven_err overflow; // Not enough memory to run
 		} mem;
 
 		const struct {
-			const cl_baseven_err undef, // Undefined variable
-			  inval,                    // Invalid variable
-			  ncompat;                  // Incompatible variable
+			const cl_baseven_err inval; // Invalid variable
 		} var;
 
 	} err;