diff --git a/contrib/adaptive-compression/adapt.c b/contrib/adaptive-compression/adapt.c
index 17721f87..ab332f49 100644
--- a/contrib/adaptive-compression/adapt.c
+++ b/contrib/adaptive-compression/adapt.c
@@ -355,7 +355,7 @@ static void adaptCompressionLevel(adaptCCtx* ctx)
                 double completion;
                 pthread_mutex_lock(&ctx->completion_mutex.pMutex);
                 completion = writeSlow ? ctx->writeCompletion : ctx->createCompletion;
-                DEBUG(2, "write completion: %f, create completion: %f\n", ctx->writeCompletion, ctx->createCompletion);
+                DEBUG(3, "write completion: %f, create completion: %f\n", ctx->writeCompletion, ctx->createCompletion);
                 pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
                 {
                     unsigned const maxChange = (unsigned)((1-completion) * (MAX_COMPRESSION_LEVEL_CHANGE - 1)) + 1;
@@ -375,7 +375,7 @@ static void adaptCompressionLevel(adaptCCtx* ctx)
                     unsigned const maxChange = (unsigned)((1-completion) * (MAX_COMPRESSION_LEVEL_CHANGE-1)) + 1;
                     unsigned const change = MIN(maxChange, ctx->compressionLevel - 1);
                     DEBUG(3, "decreasing compression level %u\n", ctx->compressionLevel);
-                    DEBUG(3, "completion: %f\n", completion);
+                    DEBUG(2, "completion: %f\n", completion);
                     ctx->compressionLevel -= change;
                     reset = 1;
                 }
@@ -493,6 +493,13 @@ static void* compressionThread(void* arg)
                     dstPos += ret;
                     dictPos += actualBlockSize;
                     blockNum++;
+
+                    /* update completion */
+                    pthread_mutex_lock(&ctx->completion_mutex.pMutex);
+                    if (!ctx->compressionCompletionMeasured) {
+                        ctx->compressionCompletion = 1 - (double)remaining/job->src.size;
+                    }
+                    pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
                 }
             }
             job->dst.size = job->compressedSize;
@@ -549,11 +556,7 @@ static void* outputThread(void* arg)
             pthread_mutex_unlock(&ctx->stats_mutex.pMutex);
             reduceCounters(ctx);
             pthread_mutex_lock(&ctx->completion_mutex.pMutex);
-            if (!ctx->compressionCompletionMeasured) {
-                ctx->compressionCompletion = ZSTD_getCompletion(ctx->cctx);
-                ctx->compressionCompletionMeasured = 1;
-                DEBUG(3, "output detected completion: %f\n", ctx->compressionCompletion);
-            }
+            ctx->compressionCompletionMeasured = 1;
             pthread_mutex_unlock(&ctx->completion_mutex.pMutex);
             DEBUG(3, "waiting on job compressed, nextJob: %u\n", currJob);
             pthread_cond_wait(&ctx->jobCompressed_cond.pCond, &ctx->jobCompressed_mutex.pMutex);