diff --git a/tests/pngimage-full b/tests/pngimage-full
index f5eb9895e..1198ed05c 100755
--- a/tests/pngimage-full
+++ b/tests/pngimage-full
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngimage --exhaustive --log "${srcdir}/contrib/pngsuite/"*.png
+exec ./pngimage --exhaustive --list-combos --log "${srcdir}/contrib/pngsuite/"*.png
diff --git a/tests/pngimage-quick b/tests/pngimage-quick
index 2d4b5db22..328dc27b5 100755
--- a/tests/pngimage-quick
+++ b/tests/pngimage-quick
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngimage --log "${srcdir}/contrib/pngsuite/"*.png
+exec ./pngimage --list-combos --log "${srcdir}/contrib/pngsuite/"*.png
diff --git a/tests/pngunknown-IDAT b/tests/pngunknown-IDAT
index 71d915a9c..8e7281aa8 100755
--- a/tests/pngunknown-IDAT
+++ b/tests/pngunknown-IDAT
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngunknown default=discard IDAT=save "${srcdir}/pngtest.png"
+exec ./pngunknown --strict default=discard IDAT=save "${srcdir}/pngtest.png"
diff --git a/tests/pngunknown-discard b/tests/pngunknown-discard
index f1f02d4c7..c96dab370 100755
--- a/tests/pngunknown-discard
+++ b/tests/pngunknown-discard
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngunknown default=discard "${srcdir}/pngtest.png"
+exec ./pngunknown --strict default=discard "${srcdir}/pngtest.png"
diff --git a/tests/pngunknown-if-safe b/tests/pngunknown-if-safe
index 7c52824f8..31a4954fb 100755
--- a/tests/pngunknown-if-safe
+++ b/tests/pngunknown-if-safe
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngunknown default=if-safe "${srcdir}/pngtest.png"
+exec ./pngunknown --strict default=if-safe "${srcdir}/pngtest.png"
diff --git a/tests/pngunknown-sAPI b/tests/pngunknown-sAPI
index e087ef25a..4317b1847 100755
--- a/tests/pngunknown-sAPI
+++ b/tests/pngunknown-sAPI
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngunknown bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save "${srcdir}/pngtest.png"
+exec ./pngunknown --strict bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save "${srcdir}/pngtest.png"
diff --git a/tests/pngunknown-sTER b/tests/pngunknown-sTER
index 1b945dc34..59c5ecd54 100755
--- a/tests/pngunknown-sTER
+++ b/tests/pngunknown-sTER
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngunknown sTER=if-safe "${srcdir}/pngtest.png"
+exec ./pngunknown --strict sTER=if-safe "${srcdir}/pngtest.png"
diff --git a/tests/pngunknown-save b/tests/pngunknown-save
index ae849308c..21412c42a 100755
--- a/tests/pngunknown-save
+++ b/tests/pngunknown-save
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngunknown default=save "${srcdir}/pngtest.png"
+exec ./pngunknown --strict default=save "${srcdir}/pngtest.png"
diff --git a/tests/pngunknown-vpAg b/tests/pngunknown-vpAg
index 396c6e40d..04f07b69a 100755
--- a/tests/pngunknown-vpAg
+++ b/tests/pngunknown-vpAg
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngunknown vpAg=if-safe "${srcdir}/pngtest.png"
+exec ./pngunknown --strict vpAg=if-safe "${srcdir}/pngtest.png"
diff --git a/tests/pngvalid-standard b/tests/pngvalid-standard
index aa1b4b4db..db8febf65 100755
--- a/tests/pngvalid-standard
+++ b/tests/pngvalid-standard
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --standard --progressive-read
+exec ./pngvalid --standard