diff --git a/tests/fuzzer.c b/tests/fuzzer.c
index b049a9e09..c17cdcd4a 100644
--- a/tests/fuzzer.c
+++ b/tests/fuzzer.c
@@ -2426,6 +2426,15 @@ static int basicUnitTests(U32 const seed, double compressibility)
         }   }
         DISPLAYLEVEL(3, "OK \n");
 
+#if !defined(ZSTD_EXCLUDE_DFAST_BLOCK_COMPRESSOR) \
+ && !defined(ZSTD_EXCLUDE_GREEDY_BLOCK_COMPRESSOR) \
+ && !defined(ZSTD_EXCLUDE_DFAST_BLOCK_COMPRESSOR) \
+ && !defined(ZSTD_EXCLUDE_LAZY_BLOCK_COMPRESSOR) \
+ && !defined(ZSTD_EXCLUDE_LAZY2_BLOCK_COMPRESSOR) \
+ && !defined(ZSTD_EXCLUDE_BTLAZY2_BLOCK_COMPRESSOR) \
+ && !defined(ZSTD_EXCLUDE_BTOPT_BLOCK_COMPRESSOR) \
+ && !defined(ZSTD_EXCLUDE_BTULTRA_BLOCK_COMPRESSOR) \
+ && !defined(ZSTD_EXCLUDE_BTULTRA2_BLOCK_COMPRESSOR)
         /* Note : these tests should be replaced by proper regression tests,
          *         but existing ones do not focus on small data + dictionary + all levels.
          */
@@ -2524,6 +2533,7 @@ static int basicUnitTests(U32 const seed, double compressibility)
 
             DISPLAYLEVEL(4, "compression efficiency tests OK \n");
         }
+#endif
 
         ZSTD_freeCCtx(ctxOrig);
         ZSTD_freeCCtx(ctxDuplicated);