diff --git a/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/functionVsSuspendFunction.kt b/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/functionVsSuspendFunction.kt
new file mode 100644
index 00000000000..88dd5fede53
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/functionVsSuspendFunction.kt
@@ -0,0 +1,17 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+fun useSuspendFn(sfn: suspend () -> Unit) = sfn
+fun useFn(fn: () -> Unit) = fn
+
+fun ambiguous(sfn: suspend () -> Unit) = sfn
+fun ambiguous(fn: () -> Unit) = fn
+
+fun test1(sfn: suspend () -> Unit) = useFn(<!TYPE_MISMATCH!>sfn<!>)
+fun test2(fn: () -> Unit) = useSuspendFn(<!TYPE_MISMATCH!>fn<!>)
+
+fun test3(sfn: suspend () -> Unit) = useSuspendFn(sfn)
+fun test4(): suspend () -> Unit = useSuspendFn {}
+
+fun test5(sfn: suspend () -> Unit) = ambiguous(sfn)
+fun test6(fn: () -> Unit) = ambiguous(fn)
+fun test7(): () -> Unit = ambiguous {}
\ No newline at end of file
diff --git a/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/functionVsSuspendFunction.txt b/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/functionVsSuspendFunction.txt
new file mode 100644
index 00000000000..4fe679f46b6
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/functionVsSuspendFunction.txt
@@ -0,0 +1,13 @@
+package
+
+public fun ambiguous(/*0*/ fn: () -> kotlin.Unit): () -> kotlin.Unit
+public fun ambiguous(/*0*/ sfn: suspend () -> kotlin.Unit): suspend () -> kotlin.Unit
+public fun test1(/*0*/ sfn: suspend () -> kotlin.Unit): () -> kotlin.Unit
+public fun test2(/*0*/ fn: () -> kotlin.Unit): suspend () -> kotlin.Unit
+public fun test3(/*0*/ sfn: suspend () -> kotlin.Unit): suspend () -> kotlin.Unit
+public fun test4(): suspend () -> kotlin.Unit
+public fun test5(/*0*/ sfn: suspend () -> kotlin.Unit): suspend () -> kotlin.Unit
+public fun test6(/*0*/ fn: () -> kotlin.Unit): () -> kotlin.Unit
+public fun test7(): () -> kotlin.Unit
+public fun useFn(/*0*/ fn: () -> kotlin.Unit): () -> kotlin.Unit
+public fun useSuspendFn(/*0*/ sfn: suspend () -> kotlin.Unit): suspend () -> kotlin.Unit
diff --git a/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/noInvokeForSuspendFunction.kt b/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/noInvokeForSuspendFunction.kt
new file mode 100644
index 00000000000..1299adfcac9
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/noInvokeForSuspendFunction.kt
@@ -0,0 +1,2 @@
+fun test1(sfn: suspend () -> Unit) = <!FUNCTION_EXPECTED!>sfn<!>()
+fun test2(sfn: suspend () -> Unit) = sfn.<!UNRESOLVED_REFERENCE!>invoke<!>()
\ No newline at end of file
diff --git a/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/noInvokeForSuspendFunction.txt b/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/noInvokeForSuspendFunction.txt
new file mode 100644
index 00000000000..123d33e963f
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/coroutines/suspendFunctionType/noInvokeForSuspendFunction.txt
@@ -0,0 +1,4 @@
+package
+
+public fun test1(/*0*/ sfn: suspend () -> kotlin.Unit): [ERROR : Error function type]
+public fun test2(/*0*/ sfn: suspend () -> kotlin.Unit): [ERROR : Error function type]