diff --git a/.travis.yml b/.travis.yml
index b0489bd6..ba9f9965 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,10 +8,6 @@ matrix:
 
 
     # Container-based Ubuntu 12.04 LTS Server Edition 64 bit (doesn't support 32-bit includes)
-    - env: Ubu=12.04cont Cmd="make test && make clean && make travis-install"
-      os: linux
-      sudo: false
-
     - env: Ubu=12.04cont Cmd="make zlibwrapper && make clean && make -C tests test-symbols && make clean && make -C tests test-zstd-nolegacy && make clean && make cmaketest && make clean && make -C contrib/pzstd googletest pzstd tests check && make -C contrib/pzstd clean"
       os: linux
       sudo: false
@@ -80,7 +76,6 @@ matrix:
             - gcc-arm-linux-gnueabi
             - libc6-dev-armel-cross
 
-    # Ubuntu 14.04 LTS Server Edition 64 bit
     - env: Ubu=14.04 Cmd="make aarch64test"
       dist: trusty
       sudo: required
@@ -121,6 +116,23 @@ matrix:
           packages:
             - valgrind
 
+
+
+    # other feature branches => short tests
+    - env: Ubu=12.04cont Cmd="make test && make clean && make travis-install"
+      os: linux
+      sudo: false
+
+    - env: Ubu=14.04 Cmd="make -C tests test32"
+      os: linux
+      dist: trusty
+      sudo: required
+      addons:
+        apt:
+          packages:
+            - libc6-dev-i386
+            - gcc-multilib
+
     - env: Ubu=14.04 Cmd="make gpptest && make clean && make gnu90test && make clean
                        && make c99test && make clean && make gnu99test && make clean
                        && make clangtest && make clean && make -C contrib/pzstd googletest32
@@ -140,16 +152,6 @@ matrix:
             - g++-4.8
             - g++-4.8-multilib
 
-    - env: Ubu=14.04 Cmd="make -C tests test32"
-      os: linux
-      dist: trusty
-      sudo: required
-      addons:
-        apt:
-          packages:
-            - libc6-dev-i386
-            - gcc-multilib
-
     - env: Ubu=14.04 Cmd="make gcc5test && make clean && make gcc6test && make clean && make -C tests dll"
       os: linux
       dist: trusty
@@ -167,5 +169,7 @@ matrix:
 
 script:
   - JOB_NUMBER=$(echo $TRAVIS_JOB_NUMBER | sed -e 's:[0-9][0-9]*\.\(.*\):\1:')
-  # - if [ $JOB_NUMBER -eq 9 ] || [ $JOB_NUMBER -eq 10 ]; then sh -c "$Cmd"; fi
-  - sh -c "$Cmd"
+  #  dev => normal tests;  other feature branches => short tests (number > 11)
+  - if [ "$TRAVIS_PULL_REQUEST" = "true" ] || [ $JOB_NUMBER -gt 11 ] || [ "$TRAVIS_BRANCH" = "dev" ] && [ "$TRAVIS_BRANCH" != "master" ]; then sh -c "$Cmd"; fi
+  #  master => long tests, as this is the final step towards a Release
+  - if [ "$TRAVIS_BRANCH" = "master" ]; then FUZZERTEST=-T10mn sh -c "$Cmd"; fi
diff --git a/lib/compress/zstd_opt.h b/lib/compress/zstd_opt.h
index 8393e7b4..8862bbd6 100644
--- a/lib/compress/zstd_opt.h
+++ b/lib/compress/zstd_opt.h
@@ -825,7 +825,7 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
 
             match_num = ZSTD_BtGetAllMatches_selectMLS_extDict(ctx, inr, iend, maxSearches, mls, matches, minMatch);
 
-            if (match_num > 0 && matches[match_num-1].len > sufficient_len) {
+            if (match_num > 0 && (matches[match_num-1].len > sufficient_len || cur + matches[match_num-1].len >= ZSTD_OPT_NUM)) {
                 best_mlen = matches[match_num-1].len;
                 best_off = matches[match_num-1].off;
                 last_pos = cur + 1;
@@ -835,7 +835,7 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
             /* set prices using matches at position = cur */
             for (u = 0; u < match_num; u++) {
                 mlen = (u>0) ? matches[u-1].len+1 : best_mlen;
-                best_mlen = (cur + matches[u].len < ZSTD_OPT_NUM) ? matches[u].len : ZSTD_OPT_NUM - cur;
+                best_mlen = matches[u].len;
 
                 while (mlen <= best_mlen) {
                     if (opt[cur].mlen == 1) {
diff --git a/programs/fileio.c b/programs/fileio.c
index ac7dffb3..86da0013 100644
--- a/programs/fileio.c
+++ b/programs/fileio.c
@@ -158,6 +158,10 @@ static FILE* FIO_openSrcFile(const char* srcFileName)
         f = stdin;
         SET_BINARY_MODE(stdin);
     } else {
+        if (!UTIL_doesFileExists(srcFileName)) {
+            DISPLAYLEVEL(1, "zstd: %s is not a regular file -- ignored \n", srcFileName);
+            return NULL;
+        }
         f = fopen(srcFileName, "rb");
         if ( f==NULL ) DISPLAYLEVEL(1, "zstd: %s: %s \n", srcFileName, strerror(errno));
     }
@@ -414,6 +418,7 @@ static int FIO_compressFilename_srcFile(cRess_t ress,
         DISPLAYLEVEL(1, "zstd: %s is a directory -- ignored \n", srcFileName);
         return 1;
     }
+
     ress.srcFile = FIO_openSrcFile(srcFileName);
     if (!ress.srcFile) return 1;   /* srcFile could not be opened */
 
diff --git a/tests/Makefile b/tests/Makefile
index 937f3b41..f49d2301 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -54,8 +54,8 @@ endif
 
 VOID = /dev/null
 ZSTREAM_TESTTIME = -T2mn
-FUZZERTEST= -T5mn
-ZSTDRTTEST= --test-large-data
+FUZZERTEST ?= -T5mn
+ZSTDRTTEST = --test-large-data
 
 .PHONY: default all all32 dll clean test test32 test-all namespaceTest versionsTest
 
diff --git a/zlibWrapper/.gitignore b/zlibWrapper/.gitignore
index 23d2f3a6..6167ca4d 100644
--- a/zlibWrapper/.gitignore
+++ b/zlibWrapper/.gitignore
@@ -22,4 +22,4 @@ zwrapbench
 *.txt
 
 # Directories
-minizip/
\ No newline at end of file
+minizip/