diff --git a/travis/test/br1879590.asm b/travis/test/br1879590.asm
new file mode 100644
index 00000000..23e38728
--- /dev/null
+++ b/travis/test/br1879590.asm
@@ -0,0 +1,25 @@
+;Testname=unoptimized; Arguments=-O0 -fbin -obr1879590.bin; Files=stdout stderr br1879590.bin
+;Testname=optimized;   Arguments=-Ox -fbin -obr1879590.bin; Files=stdout stderr br1879590.bin
+
+	bits 32
+
+	pavgb mm0,[ebx]
+	pavgb mm0,qword [ebx]
+	pavgw mm0,[ebx]
+	pavgw mm0,qword [ebx]
+	pavgb xmm0,[ebx]
+	pavgb xmm0,oword [ebx]
+	pavgw xmm0,[ebx]
+	pavgw xmm0,oword [ebx]
+
+	bits 64
+
+	pavgb mm0,[rbx]
+	pavgb mm0,qword [rbx]
+	pavgw mm0,[rbx]
+	pavgw mm0,qword [rbx]
+	pavgb xmm0,[rbx]
+	pavgb xmm0,oword [rbx]
+	pavgw xmm0,[rbx]
+	pavgw xmm0,oword [rbx]
+
diff --git a/travis/test/br1879590.bin.t b/travis/test/br1879590.bin.t
new file mode 100644
index 00000000..d4a0b0d5
--- /dev/null
+++ b/travis/test/br1879590.bin.t
@@ -0,0 +1 @@
+ààããfàfàfãfãààããfàfàfãfã
\ No newline at end of file
diff --git a/travis/test/br1879590.json b/travis/test/br1879590.json
new file mode 100644
index 00000000..63fa5ca2
--- /dev/null
+++ b/travis/test/br1879590.json
@@ -0,0 +1,18 @@
+[
+	{
+		"description": "Test br1879590 (-Ox)",
+		"id": "br1879590",
+		"format": "bin",
+		"source": "br1879590.asm",
+		"option": "-Ox",
+		"target": [
+			{ "output": "br1879590.bin" }
+		]
+	},
+	{
+		"description": "Test br1879590 (-O0)",
+		"ref": "br1879590",
+		"option": "-O0",
+		"update": "false"
+	}
+]