diff --git a/tests/Makefile b/tests/Makefile
index a0ddc7c..a11cf9b 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -43,7 +43,8 @@ PYTHON  ?= python3
 
 CFLAGS  ?= -O3   # can select custom flags. For example : CFLAGS="-O2 -g" make
 CFLAGS  += -Wall -Wextra -Wundef -Wcast-qual -Wcast-align -Wshadow -Wswitch-enum \
-           -Wdeclaration-after-statement -Wstrict-prototypes
+           -Wdeclaration-after-statement -Wstrict-prototypes \
+           -Wpointer-arith -Wstrict-aliasing=1
 CFLAGS  += $(MOREFLAGS)
 CPPFLAGS:= -I$(LZ4DIR) -DXXH_NAMESPACE=LZ4_
 FLAGS   := $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
diff --git a/tests/fuzzer.c b/tests/fuzzer.c
index 50f6871..301b01a 100644
--- a/tests/fuzzer.c
+++ b/tests/fuzzer.c
@@ -300,24 +300,8 @@ static int FUZ_test(U32 seed, U32 nbCycles, const U32 startCycle, const double c
     }
 
     /* move to startCycle */
-    for (cycleNb = 0; cycleNb < startCycle; cycleNb++) {
-        U32 randState = FUZ_rand(&coreRandState) ^ PRIME3;
-
-        if (0) {   /* some problems can be related to dictionary re-use; in this case, enable this loop */
-            int const blockSize  = FUZ_rand(&randState) % FUZ_MAX_BLOCK_SIZE;
-            int const blockStart = FUZ_rand(&randState) % (COMPRESSIBLE_NOISE_LENGTH - blockSize);
-            int const dictSizeRand = FUZ_rand(&randState) % FUZ_MAX_DICT_SIZE;
-            int const dictSize = MIN(dictSizeRand, blockStart);
-            char* const block = ((char*)CNBuffer) + blockStart;
-            const char* const dict = block - dictSize;
-            FUZ_displayUpdate(cycleNb);
-            LZ4_loadDict(&LZ4dict, dict, dictSize);
-            LZ4_compress_fast_continue(&LZ4dict, block, compressedBuffer, blockSize, compressedBufferSize, 1);
-            LZ4_loadDict(&LZ4dict, dict, dictSize);
-            LZ4_compress_fast_continue(&LZ4dict, block, compressedBuffer, blockSize, compressedBufferSize, 1);
-            LZ4_loadDict(&LZ4dict, dict, dictSize);
-            LZ4_compress_fast_continue(&LZ4dict, block, compressedBuffer, blockSize, compressedBufferSize, 1);
-    }   }
+    for (cycleNb = 0; cycleNb < startCycle; cycleNb++)
+        (void) FUZ_rand(&coreRandState);   /* sync coreRandState */
 
     /* Main test loop */
     for (cycleNb = startCycle;